Updated openstack/openstack
Project: openstack/sahara  52c69c1f23e7673444d542b57ec850b17c832cf4

Update docs to reflect the changes in security group section in horizon

Horizon has gone through multiple tab changes. This patch changes the
docs to reflect the recent changes in horizon related to security group
section.

Change-Id: I1ba56aacb03506c480a1ab24992a50c210f07899
Closes-Bug: #1225172