Chore(stress-chaos): Add stress chaos charts (#475)

Signed-off-by: udit <udit@chaosnative.com>

Co-authored-by: Shubham Chaudhary <shubham.chaudhary@mayadata.io>

charts/generic/pod-memory-hog-exec/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'
+  appinfo:
+    appns: 'default'
+    applabel: 'app=nginx'
+    appkind: 'deployment'
+  chaosServiceAccount: pod-memory-hog-exec-sa
+  experiments:
+    - name: pod-memory-hog-exec
+      spec:
+        components:
+          env:
+            # Enter the amount of memory in megabytes to be consumed by the application pod
+            - name: MEMORY_CONSUMPTION
+              value: '500'
+
+            - name: TOTAL_CHAOS_DURATION
+              value: '60' # in seconds
+            

charts/generic/pod-memory-hog-exec/experiment.yaml

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+---
+apiVersion: litmuschaos.io/v1alpha1
+description:
+  message: |
+    Injects memory consumption on pods belonging to an app deployment
+kind: ChaosExperiment
+metadata:
+  name: pod-memory-hog-exec
+  labels:
+    name: pod-memory-hog-exec
+    app.kubernetes.io/part-of: litmus
+    app.kubernetes.io/component: chaosexperiment
+    app.kubernetes.io/version: latest
+spec:
+  definition:
+    scope: Namespaced
+    permissions:
+      - apiGroups:
+          - ""
+          - "batch"
+          - "apps"
+          - "apps.openshift.io"
+          - "argoproj.io"
+          - "litmuschaos.io"
+        resources:
+          - "jobs"
+          - "pods"
+          - "pods/log"
+          - "replicationcontrollers"
+          - "deployments"
+          - "statefulsets"
+          - "daemonsets"
+          - "replicasets"
+          - "deploymentconfigs"
+          - "rollouts"
+          - "pods/exec"
+          - "events"
+          - "chaosengines"
+          - "chaosexperiments"
+          - "chaosresults"
+        verbs:
+          - "create"
+          - "list"
+          - "get"
+          - "patch"
+          - "update"
+          - "delete"
+          - "deletecollection"
+    image: "litmuschaos/go-runner:ci"
+    imagePullPolicy: Always
+    args:
+    - -c
+    - ./experiments -name pod-memory-hog-exec
+    command:
+    - /bin/bash
+    env:
+      - name: TOTAL_CHAOS_DURATION
+        value: '60'
+
+      ## enter the amount of memory in megabytes to be consumed by the application pod
+      - name: MEMORY_CONSUMPTION
+        value: '500'
+
+      ## percentage of total pods to target
+      - name: PODS_AFFECTED_PERC
+        value: ''
+
+      ## Period to wait before and after injection of chaos in sec
+      - name: RAMP_TIME
+        value: ''     
+
+      ## env var that describes the library used to execute the chaos
+      ## default: litmus. Supported values: litmus
+      - name: LIB
+        value: 'litmus'
+        
+      ## it defines the sequence of chaos execution for multiple target pods
+      ## supported values: serial, parallel
+      - name: SEQUENCE
+        value: 'parallel'
+
+      - name: TARGET_PODS
+        value: ''
+
+    labels:
+      name: pod-memory-hog-exec
+      app.kubernetes.io/part-of: litmus
+      app.kubernetes.io/component: experiment-job
+      app.kubernetes.io/version: latest

charts/generic/pod-memory-hog-exec/pod-memory-hog-exec.chartserviceversion.yaml

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+apiVersion: litmuchaos.io/v1alpha1
+kind: ChartServiceVersion
+metadata:
+  createdAt: 2020-04-10T10:28:08Z
+  name: pod-memory-hog-exec
+  version: 0.1.4
+  annotations:
+    categories: Kubernetes
+    vendor: CNCF
+    support: https://slack.kubernetes.io/
+spec:
+  displayName: pod-memory-hog-exec
+  categoryDescription: |
+    pod-memory-hog-exec contains chaos to consume Memory resouces of specified containers in Kubernetes pods.  
+    - Consumes the memory specified by executing a dd command against special files /dev/zero(input) and /dev/null(output)
+    - The application pod should be healthy once chaos is stopped. Expectation is that service-requests should be served despite chaos.
+  keywords:
+    - Kubernetes
+    - Memory
+  platforms:
+    - GKE
+    - Packet(Kubeadm)
+    - Minikube
+    - EKS
+    - AKS
+    - OpenShift(OKD)
+  maturity: alpha
+  maintainers:
+    - name: Udit Gaurav
+      email: udit@chaosnative.com
+  minKubeVersion: 1.12.0
+  provider:
+    name: ChaosNative
+  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/pod-memory-hog-exec
+    - name: Documentation
+      url: https://docs.litmuschaos.io/docs/pod-memory-hog-exec/
+    - name: Video
+      url: https://www.youtube.com/watch?v=HuAXg8W5Tzo 
+  icon:
+    - base64data: ""
+      mediatype: ""
+  chaosexpcrdlink: https://raw.githubusercontent.com/litmuschaos/chaos-charts/master/charts/generic/pod-memory-hog-exec/experiment.yaml 

charts/generic/pod-memory-hog-exec/rbac-psp.yaml

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+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: pod-memory-hog-exec-sa
+  namespace: default
+  labels:
+    name: pod-memory-hog-exec-sa
+    app.kubernetes.io/part-of: litmus
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: pod-memory-hog-exec-sa
+  namespace: default
+  labels:
+    name: pod-memory-hog-exec-sa
+    app.kubernetes.io/part-of: litmus
+rules:
+- apiGroups: [""]
+  resources: ["pods","events"]
+  verbs: ["create","list","get","patch","update","delete","deletecollection"]
+- apiGroups: [""]
+  resources: ["pods/exec","pods/log","replicationcontrollers"]
+  verbs: ["create","list","get"]
+- apiGroups: ["batch"]
+  resources: ["jobs"]
+  verbs: ["create","list","get","delete","deletecollection"]
+- apiGroups: ["apps"]
+  resources: ["deployments","statefulsets","daemonsets","replicasets"]
+  verbs: ["list","get"]
+- apiGroups: ["apps.openshift.io"]
+  resources: ["deploymentconfigs"]
+  verbs: ["list","get"]
+- apiGroups: ["argoproj.io"]
+  resources: ["rollouts"]
+  verbs: ["list","get"]
+- apiGroups: ["litmuschaos.io"]
+  resources: ["chaosengines","chaosexperiments","chaosresults"]
+  verbs: ["create","list","get","patch","update"]
+- apiGroups: ["policy"]
+  resources: ["podsecuritypolicies"]
+  verbs: ["use"]
+  resourceNames: ["litmus"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: pod-memory-hog-exec-sa
+  namespace: default
+  labels:
+    name: pod-memory-hog-exec-sa
+    app.kubernetes.io/part-of: litmus
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: pod-memory-hog-exec-sa
+subjects:
+- kind: ServiceAccount
+  name: pod-memory-hog-exec-sa
+  namespace: default

charts/generic/pod-memory-hog-exec/rbac.yaml

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+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: pod-memory-hog-exec-sa
+  namespace: default
+  labels:
+    name: pod-memory-hog-exec-sa
+    app.kubernetes.io/part-of: litmus
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: pod-memory-hog-exec-sa
+  namespace: default
+  labels:
+    name: pod-memory-hog-exec-sa
+    app.kubernetes.io/part-of: litmus
+rules:
+- apiGroups: [""]
+  resources: ["pods","events"]
+  verbs: ["create","list","get","patch","update","delete","deletecollection"]
+- apiGroups: [""]
+  resources: ["pods/exec","pods/log","replicationcontrollers"]
+  verbs: ["create","list","get"]
+- apiGroups: ["batch"]
+  resources: ["jobs"]
+  verbs: ["create","list","get","delete","deletecollection"]
+- apiGroups: ["apps"]
+  resources: ["deployments","statefulsets","daemonsets","replicasets"]
+  verbs: ["list","get"]
+- apiGroups: ["apps.openshift.io"]
+  resources: ["deploymentconfigs"]
+  verbs: ["list","get"]
+- apiGroups: ["argoproj.io"]
+  resources: ["rollouts"]
+  verbs: ["list","get"]
+- apiGroups: ["litmuschaos.io"]
+  resources: ["chaosengines","chaosexperiments","chaosresults"]
+  verbs: ["create","list","get","patch","update"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: pod-memory-hog-exec-sa
+  namespace: default
+  labels:
+    name: pod-memory-hog-exec-sa
+    app.kubernetes.io/part-of: litmus
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: pod-memory-hog-exec-sa
+subjects:
+- kind: ServiceAccount
+  name: pod-memory-hog-exec-sa
+  namespace: default