addition of mysql-wordpress-pd example

examples/mysql-wordpress-pd/mysql-service.yaml

@@ -0,0 +1,15 @@
+kind: Service
+apiVersion: v1beta1
+id: mysql
+# the port that this service should serve on
+port: 3306
+# just like the selector in the replication controller,
+# but this time it identifies the set of pods to load balance
+# traffic to.
+selector:
+  name: mysql
+# the container on each pod to connect to, can be a name
+# (e.g. 'www') or a number (e.g. 80)
+containerPort: 3306
+labels:
+  name: mysql