Fix success-pattern usage for openstack-manuals

Change Ia8f60c8a4b9d1b18583366d83ddb82dc61bff9f5 added a generic
rule to use a success-pattern to point to docs-draft for built books.
The order here is important, the regex line must come before the
non-regex line so that the regex is applied in all cases.

Change-Id: Ife43544864a1084d82325ced1d4a61a9cb6e5fa1