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/experiment.yaml

@@ -0,0 +1,89 @@
+---
+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