feat(sample-engine) Adding sample engine for openebs experiments (#195)

Signed-off-by: shubhamchaudhary <shubham.chaudhary@mayadata.io>

charts/openebs/sample_openebs_engine_with_data_persistency_enabled.yaml

@@ -0,0 +1,35 @@
+apiVersion: litmuschaos.io/v1alpha1
+kind: ChaosEngine
+metadata:
+  name: openebs-chaos
+  namespace: default
+spec:
+  # It can be true/false
+  annotationCheck: 'false' 
+  # It can be active/stop
+  engineState: 'active'
+  #ex. values: ns1:name=percona,ns2:run=nginx 
+  auxiliaryAppInfo: ''
+  appinfo:
+    appns: 'default'
+    applabel: 'app=nginx'
+    appkind: 'deployment'
+  chaosServiceAccount: <experiments-name>-sa
+  monitoring: false
+  # It can be delete/retain
+  jobCleanUpPolicy: 'delete'
+  experiments:
+    - name: <experiments-name>
+      spec:
+        components:
+          env:
+            - name: TARGET_CONTAINER
+              value: 'cstor-istgt'
+            - name: APP_PVC
+              value: 'demo-nginx-claim' 
+          configMaps:
+            - name: map1
+              mountPath: '/mnt'
+          secrets:
+            - name: secret1
+              mountPath: '/tmp'