Updated openstack/openstack
Project: openstack/horizon  c48b58c8e3214151f3042bf26ba4b3cac0b365f4
null
Remove "Delete" buttons when VPN objects are in use

Deleting attached services and policies doesn't
cause NotImplementedError anymore. Moreover,
options "Delete VPN Service", "Delete IKE Policy" and
"Delete IPSec Policy" don't appear in corresponding row
if there is a connection created using these objects.
Some tests are added to detect such errors in future.

Fixes bug 1252330

Change-Id: I9ed1b4ecdad54b89bef45b2f5e422c30447cceb5