Fix build args 3

Author: xtao

lain_cli/build.py

@@ -11,11 +11,13 @@
 @arg('--release', help="build from build image if it exists")
 @arg('--push', help="tag release and meta image with version and push to registry")
 @arg('phase', default="", help="lain cluster phase id, can be added by lain config save")
-def build(phase, push=False, release=False):
+def build(**kwargs):
     """
     Build release and meta images
     """
-
+    push = kwargs.get('push', False)
+    release = kwargs.get('release', False)
+    phase = kwargs.get('phase', None)
     info("Building meta and release images ...")
     validate_only_warning()
     stage = get_phase_stage(phase) if phase else None