add IMAGE_EVENTS: load/save

Signed-off-by: muicoder <[email protected]>

compose/const.py

@@ -5,7 +5,7 @@ import sys
 
 DEFAULT_TIMEOUT = 10
 HTTP_TIMEOUT = 60
-IMAGE_EVENTS = ['delete', 'import', 'pull', 'push', 'tag', 'untag']
+IMAGE_EVENTS = ['delete', 'import', 'load', 'pull', 'push', 'save', 'tag', 'untag']
 IS_WINDOWS_PLATFORM = (sys.platform == "win32")
 LABEL_CONTAINER_NUMBER = 'com.docker.compose.container-number'
 LABEL_ONE_OFF = 'com.docker.compose.oneoff'