Add application_cluster to ListResponse message

And regenerate gRPC code.

Author: Andrew Farries

components/ws-manager-bridge-api/cluster-service.proto

@@ -78,6 +78,7 @@ message ClusterStatus {
   bool governed = 6;
   repeated AdmissionConstraint admission_constraint = 7;
   bool static = 8;
+  string application_cluster = 10;
 
   // DEPRECATED
   // repeated AdmissionPreference admission_preference = 9;