Give openstack_citest createdb perms.

The nove postgres unittests need CREATE DATABASE permissions. Give the
openstack_citest postgres user this ability.

Change-Id: I55f6855dadd0a77f651633c780dd88fcb409a155
Reviewed-on: https://review.openstack.org/21023
Approved: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Kurt Taylor <krtaylor@us.ibm.com>
Tested-by: Jenkins

modules/jenkins/manifests/slave.pp

@@ -201,9 +201,11 @@ class jenkins::slave(
       require => Class['postgresql::params'],
     }
 
-    # Create DB user and explicitly make it non superuser.
+    # Create DB user and explicitly make it non superuser
+    # that can create databases.
     postgresql::database_user { 'openstack_citest':
       password_hash => 'openstack_citest',
+      createdb      => true,
       superuser     => false,
     }