Fixing mysql-galena example's config files

examples/mysql-galera/pxc-cluster-service.yaml

 apiVersion: v1
 kind: Service
-id: pxc-cluster
 metadata:
   name: pxc-cluster
+  labels:
+    unit: pxc-cluster
 spec:
   ports:
     - port: 3306
       name: mysql
   selector:
     unit: pxc-cluster
\ No newline at end of file
-labels: 
-  unit: pxc-cluster

examples/mysql-galera/pxc-node1.yaml

 apiVersion: v1
 kind: Service
-id: pxc-node1
 metadata:
   name: pxc-node1
+  labels:
+    node: pxc-node1
 spec:
   ports:
     - port: 3306
@@ -15,8 +16,6 @@ spec:
       name: incremental-state-transfer 
   selector:
     node: pxc-node1 
-labels: 
-  node: pxc-node1
 ---
 apiVersion: v1
 kind: ReplicationController

examples/mysql-galera/pxc-node2.yaml

 apiVersion: v1
 kind: Service
-id: pxc-node2
 metadata:
   name: pxc-node2
+  labels: 
+    node: pxc-node2
 spec:
   ports:
     - port: 3306
@@ -15,8 +16,7 @@ spec:
       name: incremental-state-transfer 
   selector:
     node: pxc-node2 
-labels: 
-  node: pxc-node2
+
 ---
 apiVersion: v1
 kind: ReplicationController

examples/mysql-galera/pxc-node3.yaml

 apiVersion: v1
 kind: Service
-id: pxc-node3
 metadata:
   name: pxc-node3
+  labels: 
+    node: pxc-node3
 spec:
   ports:
     - port: 3306
@@ -15,8 +16,7 @@ spec:
       name: incremental-state-transfer 
   selector:
     node: pxc-node3 
-labels: 
-  node: pxc-node3
+
 ---
 apiVersion: v1
 kind: ReplicationController