(Adding rbac file in coredns experiments) (#138)

Signed-off-by: Udit Gaurav <uditgaurav@gmail.com>

charts/coredns/rbac.yaml

@@ -0,0 +1,33 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: coredns-sa
+  namespace: kube-system
+  labels:
+    name: coredns-sa
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRole
+metadata:
+  name: coredns-sa
+  labels:
+    name: coredns-sa
+rules:
+- apiGroups: ["","litmuschaos.io","batch"]
+  resources: ["services", "pods","jobs","chaosengines","chaosexperiments","chaosresults"]
+  verbs: ["create","list","get","patch","update","delete"]
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRoleBinding
+metadata:
+  name: coredns-sa
+  labels:
+    name: coredns-sa
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: coredns-sa
+subjects:
+- kind: ServiceAccount
+  name: coredns-sa
+  namespace: kube-system