Updated openstack/openstack
Project: openstack/horizon  192c558ab787b03bd17081870ef4cbc7b240d587

Check neutron agent extension support in Info page

Some neutron plugin don't support agent extension, and
Horizon show 404 error on admin info page.
In this commit, we are going to add check if agent
extension supported or not.
Closes-bug: 1331032

Change-Id: I5cd3ec747c650fc2b826d55f39be618eca1b7caa