[ci] make plan patch optional for bump concourse

Author: ramonskie

ci/pipelines/bosh-bootloader.yml

@@ -975,6 +975,7 @@ jobs:
       BBL_GCP_REGION: europe-north1
       BBL_ENV_NAME: bump-deployments-gcp-concourse
       BBL_STATE_DIR: bump-deployments/bbl-gcp-concourse
+      BBL_PLAN_PATCH: spot-gcp
       DELETE_TERRAFORM_PLUGINS: false
     input_mapping:
       bbl-state: relint-envs

ci/tasks/bbl-up-concourse/task

@@ -29,7 +29,16 @@ function main() {
       ${name_flag} \
       --lb-type concourse > "${root_dir}/bbl_plan.txt"
 
-    cp -r ${root_dir}/bbl-ci/plan-patches/spot-gcp .
+    # Apply plan patch if specified
+    if [ -n "${BBL_PLAN_PATCH:-}" ]; then
+      echo "Applying plan patch: ${BBL_PLAN_PATCH}"
+      if [ -d "${root_dir}/bbl-ci/plan-patches/${BBL_PLAN_PATCH}" ]; then
+        cp -r "${root_dir}/bbl-ci/plan-patches/${BBL_PLAN_PATCH}" .
+      else
+        echo "Warning: Plan patch '${BBL_PLAN_PATCH}' not found"
+        exit 1
+      fi
+    fi
 
     bbl --debug up \
       ${name_flag} \

ci/tasks/bbl-up-concourse/task.yml

@@ -41,6 +41,7 @@ params:
   BBL_IAAS:
   BBL_ENV_NAME:
   BBL_LB_TYPE: concourse
+  BBL_PLAN_PATCH:  # Optional: Plan patch directory name (e.g., "spot-gcp", "bosh-lite-gcp")
 
   GIT_COMMIT_EMAIL: "[email protected]"
   GIT_COMMIT_USERNAME: "CI Infra Bot"