merge(#1286): Cadence default single cluster

Fixed Cadence default config to use single cluster
#1286

Author: pregnor

cadence/Chart.yaml

@@ -1,5 +1,5 @@
 name: cadence
-version: 0.21.0
+version: 0.21.1
 appVersion: 0.21.3
 description: Cadence is a distributed, scalable, durable, and highly available orchestration engine to execute asynchronous long-running business logic in a scalable and resilient way.
 icon: https://raw.githubusercontent.com/uber/cadence-web/master/client/assets/logo.svg

cadence/values.yaml

@@ -138,8 +138,8 @@ server:
           # the chart configured release name and frontend port, but can be
           # manually overridden here if necessary.
           # rpcAddress: cadence-frontend:7933
-        - name: cluster-1
-          enabled: true
+        # - name: cluster-1
+        #   enabled: true
 
     logLevel: "debug,info"