build: introduce testing infra for GraalVM "C" (googleapis#1460)

* build: introduce testing infra for GraalVM "C"

* fix: use JOB_TYPE=graalvm in job B

* chore: update versions to latest

Author: diegomarquezp

.kokoro/build.sh

@@ -75,11 +75,6 @@ graalvm)
     mvn -B ${INTEGRATION_TEST_ARGS} -ntp -Pnative test
     RETURN_CODE=$?
     ;;
-graalvm17)
-    # Run Unit and Integration Tests with Native Image
-    mvn -B ${INTEGRATION_TEST_ARGS} -ntp -Pnative test
-    RETURN_CODE=$?
-    ;;
 samples)
     SAMPLES_DIR=samples
     # only run ITs in snapshot/ on presubmit PRs. run ITs in all 3 samples/ subdirectories otherwise.

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

@@ -3,7 +3,7 @@
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
   key: "TRAMPOLINE_IMAGE"
-  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_a:3.45.1"
+  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_a:3.46.2"
 }
 
 env_vars: {

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

@@ -0,0 +1,33 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Configure the docker image for kokoro-trampoline.
+env_vars: {
+  key: "TRAMPOLINE_IMAGE"
+  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_b:3.46.2"
+}
+
+env_vars: {
+  key: "JOB_TYPE"
+  value: "graalvm"
+}
+
+# TODO: remove this after we've migrated all tests and scripts
+env_vars: {
+  key: "GCLOUD_PROJECT"
+  value: "gcloud-devel"
+}
+
+env_vars: {
+  key: "GOOGLE_CLOUD_PROJECT"
+  value: "gcloud-devel"
+}
+
+env_vars: {
+  key: "GOOGLE_APPLICATION_CREDENTIALS"
+  value: "secret_manager/java-it-service-account"
+}
+
+env_vars: {
+  key: "SECRET_MANAGER_KEYS"
+  value: "java-it-service-account"
+}

.kokoro/presubmit/graalvm-native-17.cfg renamed to .kokoro/presubmit/graalvm-native-c.cfg

@@ -3,7 +3,7 @@
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
   key: "TRAMPOLINE_IMAGE"
-  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_b:3.45.1"
+  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_c:3.46.2"
 }
 
 env_vars: {