add a log rotation worker

Fixes #609.

config.py

@@ -197,6 +197,9 @@ class DefaultConfig(object):
   # Documentation: http://pythonhosted.org/semantic_version/reference.html#semantic_version.Spec
   BLACKLIST_V2_SPEC = '<1.6.0'
 
+  # Feature Flag: Whether or not to rotate old action logs to storage.
+  FEATURE_ACTION_LOG_ROTATION = False
+
   BUILD_MANAGER = ('enterprise', {})
 
   DISTRIBUTED_STORAGE_CONFIG = {
@@ -218,6 +221,10 @@ class DefaultConfig(object):
   LOG_ARCHIVE_LOCATION = 'local_us'
   LOG_ARCHIVE_PATH = 'logarchive/'
 
+  # Action logs archive
+  ACTION_LOG_ARCHIVE_LOCATION = 'local_us'
+  ACTION_LOG_ARCHIVE_PATH = 'actionlogarchive/'
+
   # For enterprise:
   MAXIMUM_REPOSITORY_USAGE = 20