build: introduce testing infra for GraalVM "C" (#3751)

* build: introduce testing infra for GraalVM "C"

* chore: use nightly jobs

* chore: delete nightly jobs

* chore: update images to the 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/continuous/graalvm-native.cfg renamed to .kokoro/continuous/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:3.46.0"
+  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_a:3.46.2"
 }
 
 env_vars: {

.kokoro/continuous/graalvm-native-17.cfg renamed to .kokoro/continuous/graalvm-native-b.cfg

@@ -3,12 +3,12 @@
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
   key: "TRAMPOLINE_IMAGE"
-  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_b:3.46.0"
+  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_b:3.46.2"
 }
 
 env_vars: {
   key: "JOB_TYPE"
-  value: "graalvm17"
+  value: "graalvm"
 }
 
 # TODO: remove this after we've migrated all tests and scripts

.kokoro/presubmit/graalvm-native.cfg renamed to .kokoro/continuous/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_a:3.46.0"
+  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_c:3.46.2"
 }
 
 env_vars: {
@@ -31,3 +31,8 @@ env_vars: {
   key: "SECRET_MANAGER_KEYS"
   value: "java-it-service-account"
 }
+
+env_vars: {
+  key: "ENABLE_FLAKYBOT"
+  value: "true"
+}