fix(functions): add 2nd-gen cloudevent tags (GoogleCloudPlatform#1678)

* fix(functions): add 2nd-gen cloudevent tags

* Update pub/sub unit test

* Update storage function

* Update storage unit test

* Typo

* Typo 2

Co-authored-by: Jennifer Davis 

Author: Ace Nassri

functions/helloworld_pubsub/SampleUnitTest.php

@@ -18,6 +18,7 @@
 
 declare(strict_types=1);
 
+// [START functions_cloudevent_pubsub_unit_test]
 // [START functions_pubsub_unit_test]
 
 namespace Google\Cloud\Samples\Functions\HelloworldPubsub\Test;
@@ -82,4 +83,5 @@ public function testFunction(
     }
 }
 
+// [END functions_cloudevent_pubsub_unit_test]
 // [END functions_pubsub_unit_test]

functions/helloworld_pubsub/index.php

@@ -16,6 +16,7 @@
  * limitations under the License.
  */
 
+// [START functions_cloudevent_pubsub]
 // [START functions_helloworld_pubsub]
 
 use CloudEvents\V1\CloudEventInterface;
@@ -38,3 +39,4 @@ function helloworldPubsub(CloudEventInterface $event): void
     fwrite($log, "Hello, $name!" . PHP_EOL);
 }
 // [END functions_helloworld_pubsub]
+// [END functions_cloudevent_pubsub]

functions/helloworld_storage/SampleUnitTest.php

@@ -19,6 +19,7 @@
 declare(strict_types=1);
 
 // [START functions_storage_unit_test]
+// [START functions_cloudevent_storage_unit_test]
 
 namespace Google\Cloud\Samples\Functions\HelloworldStorage\Test;
 
@@ -89,4 +90,5 @@ public function testFunction(CloudEventInterface $cloudevent): void
     }
 }
 
+// [END functions_cloudevent_storage_unit_test]
 // [END functions_storage_unit_test]

functions/helloworld_storage/index.php

@@ -16,6 +16,7 @@
  * limitations under the License.
  */
 
+// [START functions_cloudevent_storage]
 // [START functions_helloworld_storage]
 
 use CloudEvents\V1\CloudEventInterface;
@@ -41,4 +42,5 @@ function helloGCS(CloudEventInterface $cloudevent)
     fwrite($log, 'Updated: ' . $data['updated'] . PHP_EOL);
 }
 
+// [END functions_cloudevent_storage]
 // [END functions_helloworld_storage]