conf: Fix indentation of database options
conf: Fix indentation of database options

Consistency in all things opts.

Change-Id: I9c69a9cef3e16f518185c1f2b08dceb23cbe8508

gooddata/openstack-nova,mikalstill/nova,openstack/nova,phenoxim/nova,gooddata/openstack-nova,rahulunair/nova,phenoxim/nova,openstack/nova,gooddata/openstack-nova,mahak/nova,klmitch/nova,rahulunair/nova,mahak/nova,klmitch/nova,rahulunair/nova,mikalstill/nova,gooddata/openstack-nova,mahak/nova,mikalstill/nova,klmitch/nova,klmitch/nova,openstack/nova