fix(java): Pass missing integration test flags to native image test commands (#1309) (#29)

Source-Link: googleapis/synthtool@21f4a8d Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-java:latest@sha256:b5ce87328633e27aa3e65d42e84cc722519859349760cdad48c7b5051b519a7d Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -1,3 +1,3 @@
 docker:
  image: gcr.io/cloud-devrel-public-resources/owlbot-java:latest
- digest: sha256:a4d7b2cfc6a9d6b378a6b2458740eae15fcab28854bd23dad3a15102d2e47c87
+ digest: sha256:b5ce87328633e27aa3e65d42e84cc722519859349760cdad48c7b5051b519a7d

.kokoro/build.sh

@@ -71,7 +71,7 @@ integration)
  ;;
 graalvm)
  # Run Unit and Integration Tests with Native Image
- mvn -ntp -Pnative -Penable-integration-tests test
+ mvn -B ${INTEGRATION_TEST_ARGS} -ntp -Pnative -Penable-integration-tests test
  RETURN_CODE=$?
  ;;
 samples)