VOL-4077: Improve storage usage
- Use etcd chart 6.2.5 autoCompactionMode=revision and
  autocompactionRetention=1
- Allow configurability of ETCD_ELECTION_TIMEOUT and
  ETCD_HEARTBEAT_INTERVAL for etcd (defaults to 5000 and 1000
  respectively).
- Also create a cron job to defragement etcd DB every 5 mins

Change-Id: I32db16ab64f9ea30d69875a34016ff0479913f70
diff --git a/voltha-infra/templates/clusterrole.yaml b/voltha-infra/templates/clusterrole.yaml
index 504fafc..ba7a0aa 100644
--- a/voltha-infra/templates/clusterrole.yaml
+++ b/voltha-infra/templates/clusterrole.yaml
@@ -19,5 +19,5 @@
   namespace: {{ .Release.Namespace | quote }}
 rules:
   - apiGroups: [""]
-    resources: ["pods"]
-    verbs: ["get", "list", "watch"]
+    resources: ["pods", "pods/exec"]
+    verbs: ["get", "list", "watch", "create"]