Patch memorystore samples (#1115)

* adding missing region tags

* updating region tags

* updating region tags

* removing env (not required for Java, uses application.properties)

Author: jabubake

memorystore/redis/gke_deployment/visit-counter.yaml

@@ -11,7 +11,7 @@
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
-
+# [START memorystore_visitcounter_yaml]
 apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
@@ -28,12 +28,6 @@ spec:
       containers:
       - name: visit-counter
         image: "gcr.io/<PROJECT_ID>/visit-counter:v1"
-        env:
-        - name: REDISHOST
-          valueFrom:
-            configMapKeyRef:
-              name: redishost
-              key: REDISHOST
         ports:
         - name: http
           containerPort: 8080
@@ -50,3 +44,4 @@ spec:
   - port: 80
     targetPort: 8080
     protocol: TCP
+# [END memorystore_visitcounter_yaml]

memorystore/redis/src/main/java/com/example/redis/AppServletContextListener.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-// [START web_listener]
+// [START memorystore_web_listener]
 
 package com.example.redis;
 
@@ -70,4 +70,4 @@ public void contextInitialized(ServletContextEvent event) {
     }
   }
 }
-// [END web_listener]
+// [END memorystore_web_listener]

memorystore/redis/src/main/java/com/example/redis/VisitCounterServlet.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-// [START visit_servlet]
+// [START memorystore_visit_servlet]
 
 package com.example.redis;
 
@@ -50,4 +50,4 @@ public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOExc
     }
   }
 }
-// [END visit_servlet]
+// [END memorystore_visit_servlet]

memorystore/redis/src/main/resources/application.properties

@@ -11,6 +11,7 @@
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
-
+# [START memorystore_app_properties]
 redis.host=REDIS_HOST_IP
 redis.port=6379
+# [END memorystore_app_properties]