Directory restructure to add scenarios and experiments (#559)

* Updated dir struture with scenarios and experiments dir

Signed-off-by: Amit Kumar Das <amit.das@harness.io>

* Added icons

Signed-off-by: Amit Kumar Das <amit.das@harness.io>

experiments/generic/docker-service-kill/docker-service-kill.chartserviceversion.yaml

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+apiVersion: litmuchaos.io/v1alpha1
+kind: ChartServiceVersion
+metadata:
+  createdAt: 2020-07-14T10:28:08Z
+  name: docker-service-kill
+  version: 0.1.1
+  annotations:
+    categories: Kubernetes
+    vendor: CNCF
+    support: https://slack.kubernetes.io/
+spec:
+  displayName: docker-service-kill
+  categoryDescription: |
+    docker-service-kill contains killing docker service gracefully for a certain chaos duration.
+    - Causes replicas may be evicted or becomes unreachable on account on nodes turning unschedulable (Not Ready) due to docker service kill.
+    - The application node should be healthy once chaos is stopped and the services are reaccessable. 
+  keywords:
+    - Kubernetes
+    - K8S
+    - Node
+    - Service
+    - Docker 
+  platforms:
+    - GKE    
+    - AKS
+  maturity: alpha
+  maintainers:
+    - name: Ankur Ghosh
+      email: ankur.ghosh3@wipro.com
+  minKubeVersion: 1.12.0
+  provider:
+    name: Wipro
+  labels:
+    app.kubernetes.io/component: chartserviceversion
+    app.kubernetes.io/version: latest
+  links:
+    - name: Source Code
+      url: https://github.com/litmuschaos/litmus-go/tree/master/experiments/generic/docker-service-kill
+    - name: Documentation
+      url: https://litmuschaos.github.io/litmus/experiments/categories/nodes/docker-service-kill/
+    - name: Video
+      url: 
+
+  icon:
+    - base64data: ""
+      mediatype: ""
+  chaosexpcrdlink: https://raw.githubusercontent.com/litmuschaos/chaos-charts/master/charts/generic/docker-service-kill/experiment.yaml 

experiments/generic/docker-service-kill/engine.yaml

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+apiVersion: litmuschaos.io/v1alpha1
+kind: ChaosEngine
+metadata:
+  name: nginx-chaos
+  namespace: default
+spec:
+  # It can be active/stop
+  engineState: 'active'
+  auxiliaryAppInfo: ''
+  chaosServiceAccount: docker-service-kill-sa
+  experiments:
+    - name: docker-service-kill
+      spec:
+        components:
+        # nodeSelector: 
+        #   # provide the node labels
+        #   kubernetes.io/hostname: 'node02'
+          env:
+            - name: TOTAL_CHAOS_DURATION
+              value: '90' # in seconds
+              
+            - name: TARGET_NODE
+              value: ''

experiments/generic/docker-service-kill/experiment.yaml

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+apiVersion: litmuschaos.io/v1alpha1
+description:
+  message: |
+    Kills the docker service on the application node to check the resiliency.
+kind: ChaosExperiment
+metadata:
+  name: docker-service-kill
+  labels:
+    name: docker-service-kill
+    app.kubernetes.io/part-of: litmus
+    app.kubernetes.io/component: chaosexperiment
+    app.kubernetes.io/version: latest
+spec:
+  definition:
+    scope: Cluster
+    permissions:
+      # Create and monitor the experiment & helper pods
+      - apiGroups: [""]
+        resources: ["pods"]
+        verbs: ["create","delete","get","list","patch","update", "deletecollection"]
+      # Performs CRUD operations on the events inside chaosengine and chaosresult
+      - apiGroups: [""]
+        resources: ["events"]
+        verbs: ["create","get","list","patch","update"]
+      # Fetch configmaps details and mount it to the experiment pod (if specified)
+      - apiGroups: [""]
+        resources: ["configmaps"]
+        verbs: ["get","list",]
+      # Track and get the runner, experiment, and helper pods log 
+      - apiGroups: [""]
+        resources: ["pods/log"]
+        verbs: ["get","list","watch"]  
+      # for creating and managing to execute comands inside target container
+      - apiGroups: [""]
+        resources: ["pods/exec"]
+        verbs: ["get","list","create"]
+      # for configuring and monitor the experiment job by the chaos-runner pod
+      - apiGroups: ["batch"]
+        resources: ["jobs"]
+        verbs: ["create","list","get","delete","deletecollection"]
+      # for creation, status polling and deletion of litmus chaos resources used within a chaos workflow
+      - apiGroups: ["litmuschaos.io"]
+        resources: ["chaosengines","chaosexperiments","chaosresults"]
+        verbs: ["create","list","get","patch","update","delete"]
+      # for experiment to perform node status checks
+      - apiGroups: [""]
+        resources: ["nodes"]
+        verbs: ["get","list"]
+    image: "litmuschaos/go-runner:latest"
+    imagePullPolicy: Always
+    args:
+    - -c
+    - ./experiments -name docker-service-kill
+    command:
+    - /bin/bash
+    env:
+    
+    - name: TOTAL_CHAOS_DURATION
+      value: '90' # in seconds
+
+    # Period to wait before injection of chaos in sec
+    - name: RAMP_TIME
+      value: ''
+
+    - name: LIB
+      value: 'litmus'
+
+    - name: NODE_LABEL
+      value: ''
+
+    # provide lib image
+    - name: LIB_IMAGE
+      value: 'ubuntu:16.04' 
+            
+    # provide the target node name
+    - name: TARGET_NODE
+      value: ''
+
+    labels:
+      name: docker-service-kill
+      app.kubernetes.io/part-of: litmus
+      app.kubernetes.io/component: experiment-job
+      app.kubernetes.io/service-kill: "true"
+      app.kubernetes.io/version: latest
+

experiments/generic/docker-service-kill/rbac-psp.yaml

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+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: docker-service-kill-sa
+  namespace: default
+  labels:
+    name: docker-service-kill-sa
+    app.kubernetes.io/part-of: litmus
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: docker-service-kill-sa
+  labels:
+    name: docker-service-kill-sa
+    app.kubernetes.io/part-of: litmus
+rules:
+  # Create and monitor the experiment & helper pods
+  - apiGroups: [""]
+    resources: ["pods"]
+    verbs: ["create","delete","get","list","patch","update", "deletecollection"]
+  # Performs CRUD operations on the events inside chaosengine and chaosresult
+  - apiGroups: [""]
+    resources: ["events"]
+    verbs: ["create","get","list","patch","update"]
+  # Fetch configmaps details and mount it to the experiment pod (if specified)
+  - apiGroups: [""]
+    resources: ["configmaps"]
+    verbs: ["get","list",]
+  # Track and get the runner, experiment, and helper pods log 
+  - apiGroups: [""]
+    resources: ["pods/log"]
+    verbs: ["get","list","watch"]  
+  # for creating and managing to execute comands inside target container
+  - apiGroups: [""]
+    resources: ["pods/exec"]
+    verbs: ["get","list","create"]
+  # for configuring and monitor the experiment job by the chaos-runner pod
+  - apiGroups: ["batch"]
+    resources: ["jobs"]
+    verbs: ["create","list","get","delete","deletecollection"]
+  # for creation, status polling and deletion of litmus chaos resources used within a chaos workflow
+  - apiGroups: ["litmuschaos.io"]
+    resources: ["chaosengines","chaosexperiments","chaosresults"]
+    verbs: ["create","list","get","patch","update","delete"]
+  # for experiment to perform node status checks
+  - apiGroups: [""]
+    resources: ["nodes"]
+    verbs: ["get","list"]
+  # use litmus psp
+  - apiGroups: ["policy"]
+    resources: ["podsecuritypolicies"]
+    verbs: ["use"]
+    resourceNames: ["litmus"]  
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: docker-service-kill-sa
+  labels:
+    name: docker-service-kill-sa
+    app.kubernetes.io/part-of: litmus
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: docker-service-kill-sa
+subjects:
+- kind: ServiceAccount
+  name: docker-service-kill-sa
+  namespace: default

experiments/generic/docker-service-kill/rbac.yaml

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+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: docker-service-kill-sa
+  namespace: default
+  labels:
+    name: docker-service-kill-sa
+    app.kubernetes.io/part-of: litmus
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: docker-service-kill-sa
+  labels:
+    name: docker-service-kill-sa
+    app.kubernetes.io/part-of: litmus
+rules:
+  # Create and monitor the experiment & helper pods
+  - apiGroups: [""]
+    resources: ["pods"]
+    verbs: ["create","delete","get","list","patch","update", "deletecollection"]
+  # Performs CRUD operations on the events inside chaosengine and chaosresult
+  - apiGroups: [""]
+    resources: ["events"]
+    verbs: ["create","get","list","patch","update"]
+  # Fetch configmaps details and mount it to the experiment pod (if specified)
+  - apiGroups: [""]
+    resources: ["configmaps"]
+    verbs: ["get","list",]
+  # Track and get the runner, experiment, and helper pods log 
+  - apiGroups: [""]
+    resources: ["pods/log"]
+    verbs: ["get","list","watch"]  
+  # for creating and managing to execute comands inside target container
+  - apiGroups: [""]
+    resources: ["pods/exec"]
+    verbs: ["get","list","create"]
+  # for configuring and monitor the experiment job by the chaos-runner pod
+  - apiGroups: ["batch"]
+    resources: ["jobs"]
+    verbs: ["create","list","get","delete","deletecollection"]
+  # for creation, status polling and deletion of litmus chaos resources used within a chaos workflow
+  - apiGroups: ["litmuschaos.io"]
+    resources: ["chaosengines","chaosexperiments","chaosresults"]
+    verbs: ["create","list","get","patch","update","delete"]
+  # for experiment to perform node status checks
+  - apiGroups: [""]
+    resources: ["nodes"]
+    verbs: ["get","list"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: docker-service-kill-sa
+  labels:
+    name: docker-service-kill-sa
+    app.kubernetes.io/part-of: litmus
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: docker-service-kill-sa
+subjects:
+- kind: ServiceAccount
+  name: docker-service-kill-sa
+  namespace: default