Keystone V2 API was deprecated in Stein release in Horizon and
removed from Keystone in Queens release.
Change-Id: I917e273d3174adf0874e516b3d635ccb8ba58a27
Moves Django OpenStack Auth content to Horizon, since they are so
tightly coupled. This cleans up the development workflow and should
make keystone / auth related contributions easier.
Implements: blueprint merge-openstack-auth
Change-Id: Ia1cdc47bad1ca6e633073a9f9445b0c7f70d05bc