
Add unit test for the xenapi plugin -glance and also add a boolean return value to _download_tarball_and_verify so that it's eaiser to check the result for this function. This commit is for upload image and vhd At the same time, fix the keyword error in _update_image_meta_v2 Change-Id: Idad364a4e10f6e19a3d2344baa00272da12de316