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/coredns/coredns-pod-delete/coredns-pod-delete.chartserviceversion.yaml

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+apiVersion: litmuchaos.io/v1alpha1
+kind: ChartServiceVersion
+metadata:
+  createdAt: 2019-12-30T10:28:08Z
+  name: coredns-pod-delete
+  version: 0.1.7
+  annotations:
+    categories: CoreDNS
+    vendor: CNCF
+    support: https://slack.cncf.io/
+spec:
+  displayName: coredns-pod-delete
+  categoryDescription: |
+    Pod delete contains chaos to disrupt state of coredns resources. Experiments can inject random pod delete failures against specified application.
+    - Causes (forced/graceful) pod failure of coredns replicas of an application deployment.
+    - Tests of successful resolution of app services during chaos injection
+  keywords:
+    - Kubernetes
+    - K8S
+    - CoreDNS
+    - DNS
+    - Pod
+  platforms:
+    - GKE
+    - Minikube
+  maturity: alpha
+  maintainers:
+    - name: Raj Babu Das
+      email: raj.das@mayadata.io
+  minKubeVersion: 1.12.0
+  provider:
+    name: Mayadata
+  labels:
+    app.kubernetes.io/component: chartserviceversion
+    app.kubernetes.io/version: latest
+  links:
+    - name: Source Code
+      url: https://github.com/litmuschaos/litmus-ansible/tree/master/experiments/coredns/pod_delete
+    - name: Documentation
+      url: https://v1-docs.litmuschaos.io/docs/coredns-pod-delete/
+    - name: Video
+      url: https://www.youtube.com/watch?v=pwo5idKW7q8
+  chaosexpcrdlink: https://raw.githubusercontent.com/litmuchaos/chaos-charts/master/charts/coredns/coredns-pod-delete/experiment.yaml

experiments/coredns/coredns-pod-delete/engine.yaml

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+apiVersion: litmuschaos.io/v1alpha1
+kind: ChaosEngine
+metadata:
+  name: engine-coredns
+  namespace: kube-system
+spec:
+  appinfo:
+    appns: 'kube-system'
+    applabel: 'k8s-app=kube-dns'
+    appkind: 'deployment'
+  # It can be active/stop
+  engineState: 'active'
+  #ex. values: ns1:name=percona,ns2:run=nginx 
+  auxiliaryAppInfo: ''
+  chaosServiceAccount: coredns-pod-delete-sa
+  experiments:
+    - name: coredns-pod-delete
+      spec:
+        components:
+          env: 
+            # set chaos duration (in sec) as desired
+            - name: TOTAL_CHAOS_DURATION
+              value: '30'
+        
+            # set chaos interval (in sec) as desired
+            - name: CHAOS_INTERVAL
+              value: '10'
+
+            - name: CHAOS_NAMESPACE
+              value: 'kube-system' 

experiments/coredns/coredns-pod-delete/experiment.yaml

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+apiVersion: litmuschaos.io/v1alpha1
+description:
+  message: |
+    Deletes coredns pod in kube-system namespace
+kind: ChaosExperiment
+metadata:
+  name: coredns-pod-delete
+  labels:
+    name: coredns-pod-delete
+    app.kubernetes.io/part-of: litmus
+    app.kubernetes.io/component: chaosexperiment
+    app.kubernetes.io/version: latest
+spec:
+  definition:
+    permissions:
+    - apiGroups:
+        - ""
+        - "batch"
+        - "litmuschaos.io"
+      resources:
+        - "services"
+        - "jobs"
+        - "pods"
+        - "pods/log"
+        - "events"
+        - "chaosengines"
+        - "chaosexperiments"
+        - "chaosresults"
+      verbs:
+        - "get"
+        - "list"
+        - "patch"
+        - "create"
+        - "update"
+        - "delete"
+    image: "litmuschaos/ansible-runner:latest"
+    imagePullPolicy: Always
+    args:
+    - -c
+    - ansible-playbook ./experiments/coredns/pod_delete/pod_delete_ansible_logic.yml -i /etc/ansible/hosts -vv; exit 0
+    command:
+    - /bin/bash
+    env:
+
+    - name: ANSIBLE_STDOUT_CALLBACK
+      value: 'default'
+
+    - name: TOTAL_CHAOS_DURATION
+      value: '15'
+
+    # provide the kill count
+    - name: KILL_COUNT
+      value: ''
+
+    - name: FORCE
+      value: 'true'
+
+    - name: CHAOS_INTERVAL
+      value: '5'
+
+    #supported libs are litmus and powerfulseal
+    - name: LIB
+      value: 'litmus'
+
+    - name: LIB_IMAGE
+      value: 'litmuschaos/pod-delete-helper:latest'
+
+    labels:
+      name: coredns-pod-delete
+      app.kubernetes.io/part-of: litmus
+      app.kubernetes.io/component: experiment-job
+      app.kubernetes.io/version: latest

experiments/coredns/coredns-pod-delete/rbac.yaml

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+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: coredns-pod-delete-sa
+  namespace: kube-system
+  labels:
+    name: coredns-pod-delete-sa
+    app.kubernetes.io/part-of: litmus
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: coredns-pod-delete-sa
+  labels:
+    name: coredns-pod-delete-sa
+    app.kubernetes.io/part-of: litmus
+rules:
+- apiGroups: ["","litmuschaos.io","batch"]
+  resources: ["services", "pods","jobs","events","pods/log","chaosengines","chaosexperiments","chaosresults"]
+  verbs: ["create","list","get","patch","update","delete"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: coredns-pod-delete-sa
+  labels:
+    name: coredns-pod-delete-sa
+    app.kubernetes.io/part-of: litmus
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: coredns-pod-delete-sa
+subjects:
+- kind: ServiceAccount
+  name: coredns-pod-delete-sa
+  namespace: kube-system