Use localhost connection for cinder

As mentioned in “Set up the cinder database.”, the “PRIVILEGES” giving to cinder are local. Therefore I think it’s important to emphasize that:
“Edit /etc/cinder/cinder.conf to reflect your settings.” will give permission to local host.

try to fix Bug #1214764

Change-Id: I03f58f04f246a72f810492a7bf2e774e5b827921
Merge "Use localhost connection for cinder"