Update Region Tags (#1273)

Author: averikitsch

appengine-java8/cloudsql/pom.xml

@@ -30,7 +30,7 @@
     <version>1.0.9</version>
   </parent>
 
-  <!-- [START properties] -->
+  <!-- [START gae_java8_mysql_properties] -->
   <properties>
     <!--
       INSTANCE_CONNECTION_NAME from Cloud Console > SQL > Instance Details > Properties
@@ -48,7 +48,7 @@
       <maven.compiler.source>1.8</maven.compiler.source>
     <!-- [END_EXCLUDE] -->
   </properties>
-  <!-- [END properties] -->
+  <!-- [END gae_java8_mysql_properties] -->
 
   <dependencies>
     <dependency>