Adjust namings

deploy/grpc-dep.yaml

 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: grpc-server
+  name: grpc-service
 spec:
   replicas: 5
   selector:

deploy/rest-dep.yaml

 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: rest-server
+  name: rest-service
 spec:
   replicas: 5
   selector: