Pin to posgresql 2.5 module
Pin to posgresql 2.5 module

- Later version breaks backward compatibility
- Sort fixtures for better maintainability

Change-Id: I4197041025f5d89a02c83bfee20ef2f2788f756f
(cherry picked from commit 0ee4be96653b3d88bd2fea33e24453744d96f11a)

gwdg/puppet-cinder