fix: kokoro run diff (#1224)

Author: averikitsch

.kokoro/tests/run_tests.sh

@@ -78,6 +78,9 @@ set +e
 # Use RTN to return a non-zero value if the test fails.
 RTN=0
 ROOT=$(pwd)
+
+git config --global --add safe.directory $PWD
+
 # Find all POMs in the repository (may break on whitespace).
 for file in **/pom.xml; do
     cd "$ROOT"

appengine-standard-java8/helloworld-gae-javasdk-tools/pom.xml

@@ -127,7 +127,7 @@ limitations under the License.
         <version>2.4.4</version>
         <configuration>
           <!-- can be set w/ -DprojectId=myProjectId on command line -->
-          <projectId>myProjectId</projectId>
+          <projectId>GCLOUD_CONFIG</projectId>
           <!-- set the GAE version or use "GCLOUD_CONFIG" for an autogenerated GAE version -->
           <version>GCLOUD_CONFIG</version>
           <fullScanSeconds>1</fullScanSeconds>