feat(cassandra-chart): Adding cassandra pod-delete chart (#209)

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

charts/cassandra/cassandra-pod-delete/powerfulseal_rbac.yaml

@@ -0,0 +1,38 @@
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: cassandra-pod-delete-sa
+  namespace: default
+  labels:
+    name: cassandra-pod-delete-sa
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRole
+metadata:
+  name: cassandra-pod-delete-sa
+  labels:
+    name: cassandra-pod-delete-sa
+rules:
+- apiGroups: ["","litmuschaos.io","batch","apps"]
+  resources: ["pods","deployments","statefulsets","pods/log","pods/exec","services","events","jobs","configmaps","chaosengines","chaosexperiments","chaosresults"]
+  verbs: ["create","list","get","patch","update","delete"]
+- apiGroups: [""]
+  resources: ["nodes"]
+  verbs: ["get","list"]
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRoleBinding
+metadata:
+  name: cassandra-pod-delete-sa
+  labels:
+    name: cassandra-pod-delete-sa
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: cassandra-pod-delete-sa
+subjects:
+- kind: ServiceAccount
+  name: cassandra-pod-delete-sa
+  namespace: default
+