Glance client has a custom check that generates exception if
location has not been returned by image-get request.
This check should on server side and it should be managed by
policy rules when do location-add action.
That also allows to increase possibility of migrating Heat
to v2[1].
NOTE: After this patch, we'll raise a HTTPBadRequest from
server side instead of HTTPConflict when a user adds a
duplicate location.
[1]: https://review.openstack.org/#/c/240450/
Co-Authored-By: wangxiyuan <wangxiyuan@huawei.com>
Change-Id: I778ad2a97805b4d85eb0430c603c27a0a1c148e0
Closes-bug: #1493026
cea67763c9