try scenario override

Author: nammn

.evergreen-functions.yml

@@ -13,6 +13,7 @@ variables:
       - GRS_PASSWORD
       - GRS_USERNAME
       - OVERRIDE_VERSION_ID
+      - OVERRIDE_BUILD_SCENARIO
       - PKCS11_URI
       - branch_name
       - build_id
@@ -538,7 +539,7 @@ functions:
         shell: bash
         <<: *e2e_include_expansions_in_env
         working_dir: src/github.com/mongodb/mongodb-kubernetes
-        binary: scripts/dev/run_python.sh scripts/release/pipeline_main.py --parallel ${image_name}
+        binary: scripts/dev/run_python.sh scripts/release/pipeline_main.py --parallel ${image_name} --build-scenario ${OVERRIDE_BUILD_SCENARIO}
 
   # TODO: CLOUDP-335471 ; once all image builds are made with the new atomic pipeline, remove the following function
   legacy_pipeline:

.evergreen.yml

@@ -188,6 +188,10 @@ parameters:
     value: ""
     description: "Patch id to reuse images from other Evergreen build"
 
+  - key: OVERRIDE_BUILD_SCENARIO
+    value: "default"
+    description: "Override the build scenario for pipeline_main.py"
+
   - key: code_snippets_teardown
     value: "true"
     description: set this to false if you would like to keep the clusters created during code snippets tests

scripts/release/build/build_scenario.py

@@ -14,6 +14,7 @@ class BuildScenario(StrEnum):
     PATCH = "patch"  # CI build for a patch/pull request
     STAGING = "staging"  # CI build from a merge to the master
     DEVELOPMENT = "development"  # Local build on a developer machine
+    DEFAULT = "default"  # Use auto-detection from environment
 
     @classmethod
     def infer_scenario_from_environment(cls) -> "BuildScenario":

scripts/release/pipeline_main.py

@@ -128,6 +128,10 @@ def get_scenario_from_arg(args_scenario: str) -> BuildScenario | None:
     if not args_scenario:
         return None
 
+    # Handle "default" as a special case to trigger auto-detection
+    if args_scenario == "default":
+        return None
+
     try:
         return BuildScenario(args_scenario)
     except ValueError as e: