Unified the redirect matching being done for prior versions.
Unified the redirect matching being done for prior versions.

Updated the .htaccess file to show the same consistency for
different versions of OpenStack that are no longer supported -
specifically updating the bexar/cactus/diablo releases which were
previously only redirecting to the /trunk/ directory.

Change-Id: I844e1fbee4542a0d230a2bbf4e70963d1e626316

gongysh2004/openstack-manual,openstack/openstack-manuals,saeki-masaki/openstack-manuals,Akasurde/openstack-manuals,potsmaster/openstack-manuals,kairoaraujo/openstack-manuals,Akasurde/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,potsmaster/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,kairoaraujo/openstack-manuals,saeki-masaki/openstack-manuals,gongysh2004/openstack-manual,openstack/openstack-manuals