functions: shrink example pom sample (GoogleCloudPlatform#2845)

* functions: shrink example pom sample

* Use helloWorld POM instead (per original discussion)

* Remove example-pom tags from firebase (in favor of helloworld)

Author: Ace Nassri

functions/firebase/firestore/pom.xml

@@ -16,7 +16,6 @@
   limitations under the License.
 -->
 
-<!-- [START functions_example_pom] -->
 <project xmlns="http://maven.apache.org/POM/4.0.0"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
@@ -25,14 +24,12 @@
   <groupId>com.example.cloud.functions</groupId>
   <artifactId>functions-firebase-firestore</artifactId>
 
-  <!-- [END functions_example_pom] -->
   <parent>
     <groupId>com.google.cloud.samples</groupId>
     <artifactId>shared-configuration</artifactId>
     <version>1.0.17</version>
   </parent>
 
-  <!-- [START functions_example_pom] -->
   <properties>
     <maven.compiler.target>11</maven.compiler.target>
     <maven.compiler.source>11</maven.compiler.source>
@@ -53,7 +50,6 @@
       <version>1.0.1</version>
       <scope>provided</scope>
     </dependency>
-    <!-- [END functions_example_pom] -->
 
     <!-- The following dependencies are only required for testing -->
     <dependency>
@@ -75,8 +71,6 @@
       <scope>test</scope>
     </dependency>
   </dependencies>
-
-  <!-- [START functions_example_pom] -->
 
   <!-- Disable tests during GCF builds (from parent POM) -->
   <!--   You can remove this profile to run tests -->
@@ -158,4 +152,3 @@
     </plugins>
   </build>
 </project>
-<!-- [END functions_example_pom] -->

functions/helloworld/helloworld/pom.xml

@@ -16,22 +16,27 @@
   limitations under the License.
 -->
 
+<!-- [START functions_example_pom] -->
 <project xmlns="http://maven.apache.org/POM/4.0.0"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>com.example.cloud.functions</groupId>
   <artifactId>functions-hello-world</artifactId>
+  <!-- [END functions_example_pom] -->
 
   <parent>
     <groupId>com.google.cloud.samples</groupId>
     <artifactId>shared-configuration</artifactId>
     <version>1.0.17</version>
   </parent>
 
+  <!-- [START functions_example_pom] -->
   <properties>
+    <!-- [END functions_example_pom] -->
     <powermock.version>2.0.7</powermock.version>
+    <!-- [START functions_example_pom] -->
     <maven.compiler.target>11</maven.compiler.target>
     <maven.compiler.source>11</maven.compiler.source>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -45,6 +50,7 @@
       <version>1.0.1</version>
       <scope>provided</scope>
     </dependency>
+    <!-- [END functions_example_pom] -->
 
     <!-- The following dependencies are only required for testing -->
     <dependency>
@@ -97,6 +103,7 @@
     </profile>
   </profiles>
 
+  <!-- [START functions_example_pom] -->
   <build>
     <plugins>
       <plugin>
@@ -116,6 +123,7 @@
           <functionTarget>functions.HelloWorld</functionTarget>
         </configuration>
       </plugin>
+      <!-- [END functions_example_pom] -->
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-surefire-plugin</artifactId>
@@ -131,6 +139,8 @@
           <trimStackTrace>false</trimStackTrace>
         </configuration>
       </plugin>
+    <!-- [START functions_example_pom] -->
     </plugins>
   </build>
 </project>
+<!-- [END functions_example_pom] -->