Fixes #5913, BZ1093601 let org-switcher clear URLs pass through bastion.

See also PR #4137 which only allowed org/location selection URLs
to pass through bastion.  This adds org/location "clear" URLs as well.

http://projects.theforeman.org/issues/5913
https://bugzilla.redhat.com/show_bug.cgi?id=1093601