chore(new_chart): Add EC2 terminate experiment charts (#362)

Signed-off-by: Udit Gaurav <udit.gaurav@mayadata.io>

charts/kube-aws/ec2-terminate/ec2-terminate.chartserviceversion.yaml

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+apiVersion: litmuchaos.io/v1alpha1
+kind: ChartServiceVersion
+metadata:
+  createdAt: 2020-10-28T10:28:08Z
+  name: ec2-terminate
+  version: 0.1.0
+  annotations:
+    categories: Kubernetes
+    vendor: Mayadata
+    support: https://app.slack.com/client/T09NY5SBT/CNXNB0ZTN
+spec:
+  displayName: ec2-terminate
+  categoryDescription: |
+    This experiment causes termination of an EC2 instance for a certain chaos duration.
+    - Causes termination of an EC2 instance before bringing it back to running state after the specified chaos duration.
+    - It helps to check the performance of the application on the ec2 instance. 
+  keywords:
+    - Kubernetes
+    - AWS
+    - Termination
+  platforms:
+    - AWS
+  maturity: alpha
+  chaosType: infra
+  maintainers:
+    - name: Udit Gaurav
+      email: uditgaurav@mayadata.io
+  provider:
+    name: Mayadata
+  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/kube-aws/ec2-terminate
+    - name: Documentation
+      url: https://docs.litmuschaos.io/docs/ec2-terminate/
+    - name: Video
+      url:
+  icon:
+    - url: 
+      mediatype: ""
+  chaosexpcrdlink: https://raw.githubusercontent.com/litmuschaos/chaos-charts/master/charts/kube-aws/ec2-terminate/experiment.yaml

charts/kube-aws/ec2-terminate/engine.yaml

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+apiVersion: litmuschaos.io/v1alpha1
+kind: ChaosEngine
+metadata:
+  name: nginx-chaos
+  namespace: default
+spec:
+  annotationCheck: 'false'
+  engineState: 'active'
+  chaosServiceAccount: ec2-terminate-sa
+  monitoring: false
+  # It can be retain/delete
+  jobCleanUpPolicy: 'delete'
+  experiments:
+    - name: ec2-terminate
+      spec:
+        components:
+          env: 
+            # set chaos duration (in sec) as desired
+            - name: TOTAL_CHAOS_DURATION
+              value: '60'
+
+            # Instance ID of the target ec2 instance 
+            - name: EC2_INSTANCE_ID
+              value: ''
+              
+            # provide the region name of the instace
+            - name: REGION
+              value: ''

charts/kube-aws/ec2-terminate/experiment.yaml

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+apiVersion: litmuschaos.io/v1alpha1
+description:
+  message: |
+    Detaching an ebs volume from ec2 instance.
+kind: ChaosExperiment
+metadata:
+  name: ec2-terminate
+  labels:
+    name: ec2-terminate
+    app.kubernetes.io/part-of: litmus
+    app.kubernetes.io/component: chaosexperiment
+    app.kubernetes.io/version: latest
+spec:
+  definition:
+    scope: Cluster
+    permissions:
+      - apiGroups:
+          - ""
+          - "batch"
+          - "litmuschaos.io"
+        resources:
+          - "jobs"
+          - "pods"
+          - "events"
+          - "pods/log"
+          - "secrets"
+          - "chaosengines"
+          - "chaosexperiments"
+          - "chaosresults"
+        verbs:
+          - "create"
+          - "list"
+          - "get"
+          - "patch"
+          - "update"
+          - "delete"
+    image: "litmuschaos/go-runner:latest"
+    imagePullPolicy: Always
+    args:
+    - -c
+    - ./experiments -name ec2-terminate
+    command:
+    - /bin/bash
+    env:
+    - name: TOTAL_CHAOS_DURATION
+      value: '60'
+
+    # Period to wait before and after injection of chaos in sec
+    - name: RAMP_TIME
+      value: ''
+
+    - name: EC2_INSTANCE_ID
+      value: ''
+
+    - name: REGION
+      value: ''
+
+    # provide the LIB
+    # only litmus supported
+    - name: LIB
+      value: 'litmus'  
+          
+    labels:
+      name: ec2-terminate
+      app.kubernetes.io/part-of: litmus
+      app.kubernetes.io/component: experiment-job
+      app.kubernetes.io/version: latest
+    secrets:
+    - name: cloud-secret
+      mountPath: /tmp/

charts/kube-aws/ec2-terminate/rbac.yaml

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+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: ec2-terminate-sa
+  namespace: default
+  labels:
+    name: ec2-terminate-sa
+    app.kubernetes.io/part-of: litmus
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: ec2-terminate-sa
+  labels:
+    name: ec2-terminate-sa
+    app.kubernetes.io/part-of: litmus
+rules:
+- apiGroups: ["","litmuschaos.io","batch"]
+  resources: ["pods","jobs","secrets","events","pods/log","chaosengines","chaosexperiments","chaosresults"]
+  verbs: ["create","list","get","patch","update","delete"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: ec2-terminate-sa
+  labels:
+    name: ec2-terminate-sa
+    app.kubernetes.io/part-of: litmus
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: ec2-terminate-sa
+subjects:
+- kind: ServiceAccount
+  name: ec2-terminate-sa
+  namespace: default