Add Swarming magic environment variables to ENV_WHITELIST

recipe_engine/run.py

 # Copyright 2016 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 """Entry point for fully-annotated builds.
 
 This script is part of the effort to move all builds to annotator-based
 systems. Any builder configured to use the AnnotatorFactory.BaseFactory()
 found in scripts/master/factory/annotator_factory.py executes a single
 AddAnnotatedScript step. That step (found in annotator_commands.py) calls
@@ skipping 83 matching lines @@
     'BUILDBOT_REVISION',
     'BUILDBOT_SCHEDULER',
     'BUILDBOT_SLAVENAME',
 ])
 
 ENV_WHITELIST_PYTHON = set([
     'PYTHONPATH',
     'PYTHONUNBUFFERED',
 ])
 
-ENV_WHITELIST_INFRA = ENV_WHITELIST_PYTHON | set([
+ENV_WHITELIST_SWARMING = set([
+    'SWARMING_BOT_ID',
+    'SWARMING_HEADLESS',
+    'SWARMING_TASK_ID',
+])
+
+ENV_WHITELIST_INFRA = ENV_WHITELIST_PYTHON | ENV_WHITELIST_SWARMING | set([
     'AWS_CREDENTIAL_FILE',
     'BOTO_CONFIG',
     'BUILDBOT_ARCHIVE_FORCE_SSH',
     'CHROME_HEADLESS',
     'CHROMIUM_BUILD',
     'GIT_USER_AGENT',
     'TESTING_MASTER',
     'TESTING_MASTER_HOST',
     'TESTING_SLAVENAME',
 ])
@@ skipping 375 matching lines @@
         results.append(
           loader._invoke_with_properties(
             run_recipe, properties, recipe_script.PROPERTIES,
             properties.keys()))
       except TypeError as e:
         raise TypeError(
             "Got %r while trying to call recipe %s with properties %r" % (
               e, recipe, properties))
 
     return results