Add Cloud Build for GCP CI env

Author: roger2hk

deployment/modules/gcp/cloudbuild/main.tf

@@ -125,10 +125,11 @@ resource "google_cloudbuild_trigger" "build_trigger" {
     step {
       id   = "cloud_run_deploy"
       name = "gcr.io/google.com/cloudsdktool/cloud-sdk"
+      entrypoint = "gcloud"
       args = [
         "run",
         "deploy",
-        "ci-static-ct",
+        "${var.env}-static-ct",
         "--image",
         "${local.conformance_gcp_docker_image}:$SHORT_SHA",
         "--region",