build: introduce testing infra for GraalVM "C" (googleapis#2092)

* build: introduce GraalVM "C" testing

* chore: use latest image c version

Author: diegomarquezp

.kokoro/build.sh

@@ -70,21 +70,6 @@ integration)
     RETURN_CODE=$?
     ;;
 graalvm)
-    # Run Unit and Integration Tests with Native Image
-    mvn -B ${INTEGRATION_TEST_ARGS} -ntp -Pnative test
-    RETURN_CODE=$?
-    ;;
-graalvm17)
-    # Run Unit and Integration Tests with Native Image
-    mvn -B ${INTEGRATION_TEST_ARGS} -ntp -Pnative test
-    RETURN_CODE=$?
-    ;;
-graalvmA)
-    # Run Unit and Integration Tests with Native Image
-    mvn -B ${INTEGRATION_TEST_ARGS} -ntp -Pnative,native-tests,native-deps test -pl '!google-http-client-appengine'
-    RETURN_CODE=$?
-    ;;
-graalvmB)
     # Run Unit and Integration Tests with Native Image
     mvn -B ${INTEGRATION_TEST_ARGS} -ntp -Pnative,native-tests,native-deps test -pl '!google-http-client-appengine'
     RETURN_CODE=$?

.kokoro/presubmit/graalvm-native-17.cfg

@@ -4,7 +4,7 @@ build_file: "google-http-java-client/.kokoro/build.sh"
 
 env_vars: {
   key: "JOB_TYPE"
-  value: "graalvmA"
+  value: "graalvm"
 }
 
 # TODO: remove this after we've migrated all tests and scripts

.kokoro/presubmit/graalvm-native-a.cfg

@@ -4,7 +4,7 @@ build_file: "google-http-java-client/.kokoro/build.sh"
 
 env_vars: {
   key: "JOB_TYPE"
-  value: "graalvmB"
+  value: "graalvm"
 }
 
 # TODO: remove this after we've migrated all tests and scripts

.kokoro/presubmit/graalvm-native-b.cfg

@@ -1,10 +1,6 @@
 # Format: //devtools/kokoro/config/proto/build.proto
 
-# Configure the docker image for kokoro-trampoline.
-env_vars: {
-  key: "TRAMPOLINE_IMAGE"
-  value: "gcr.io/cloud-devrel-kokoro-resources/graalvm:22.3.3"
-}
+build_file: "google-http-java-client/.kokoro/build.sh"
 
 env_vars: {
   key: "JOB_TYPE"
@@ -31,3 +27,7 @@ env_vars: {
   key: "SECRET_MANAGER_KEYS"
   value: "java-it-service-account"
 }
+
+container_properties {
+  docker_image: "us-docker.pkg.dev/java-graalvm-ci-prod/graalvm-integration-testing/graalvm_c:1.15.4"
+}