(enhancement)charts: add standard kubernetes labels to experiments (#346)

Signed-off-by: ksatchit <karthik.s@mayadata.io>

charts/generic/disk-fill/ansible/experiment.yaml

@@ -67,3 +67,4 @@ spec:
 
     labels:
       name: disk-fill
+      app.kubernetes.io/part-of: litmus

charts/generic/disk-fill/ansible/rbac.yaml

@@ -6,6 +6,7 @@ metadata:
   namespace: default
   labels:
     name: disk-fill-sa
+    app.kubernetes.io/part-of: litmus
 ---
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRole
@@ -13,6 +14,7 @@ metadata:
   name: disk-fill-sa
   labels:
     name: disk-fill-sa
+    app.kubernetes.io/part-of: litmus
 rules:
 - apiGroups: ["","apps","litmuschaos.io","batch"]
   resources: ["pods","jobs","pods/exec","events","pods/log","chaosengines","chaosexperiments","chaosresults"]
@@ -24,6 +26,7 @@ metadata:
   name: disk-fill-sa
   labels:
     name: disk-fill-sa
+    app.kubernetes.io/part-of: litmus
 roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: ClusterRole
@@ -31,4 +34,4 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: disk-fill-sa
-  namespace: default
+  namespace: default