Use parse_args in lp create command
Use parse_args in lp create command

Otherwise "--git_url" is accepted, and we
want those arguments to be strictly positional.

Change-Id: I8b08f83600c0810a75ab8d6a04dfa77ed1b242b2

stackforge/python-solumclient,stackforge/python-solumclient,openstack/python-solumclient