Remove temporary fixes in cinder::base

Change-Id: I8c33789183d397cf83743cee165c49d5f0f9ae4d
Fixes: rhbz#958900 for cinder
Changed mode of /var/log/nova to 0750

Change-Id: Ib8d6db082a4325910d8c61edbc7d9367c6c0ed14
Fixes: rhbz#958900 for nova
Disable *keystone directories to be world readable

Change-Id: I1a9a50d600c549e988f66476d449ae2d606054f1
Fixes: rhbz#958900 for Keystone
Merge "Remove temporary fixes in cinder::base" into folsom
Merge "Disable *keystone directories to be world readable" into folsom