Fix formatting and versions in managed vms cloudsql

Author: Shun Fan

managed_vms/cloudsql/pom.xml

@@ -56,7 +56,7 @@ Copyright 2016 Google Inc. All Rights Reserved.
       <plugin>
         <groupId>com.google.appengine</groupId>
         <artifactId>gcloud-maven-plugin</artifactId>
-        <version>2.0.9.106.v20160420</version>
+        <version>${maven.plugin.version}</version>
       </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>

managed_vms/cloudsql/src/main/appengine/app.yaml

@@ -24,4 +24,4 @@ handlers:
 env_variables:
   SQL_REMOTE_URL: jdbc:mysql://google/YOUR-DB-NAME?cloudSqlInstance=YOUR-INSTANCE-NAME&socketFactory=com.google.cloud.sql.mysql.SocketFactory&user=USERNAME&password=PASSWORD
   SQL_LOCAL_URL: jdbc:mysql://localhost/YOUR-DB-NAME?user=YOUR-USERNAME&password=PASSWORD&useSSL=false
-# [END env_variables]
+# [END env_variables]

pom.xml

@@ -36,6 +36,7 @@
         <project.oauth.version>1.19.0</project.oauth.version>
         <maven.compiler.target>1.7</maven.compiler.target>
         <maven.compiler.source>1.7</maven.compiler.source>
+        <maven.plugin.version>2.0.9.111.v20160525</maven.plugin.version>
     </properties>
 
     <prerequisites>