Add backend subrequest tests for staticweb
Add backend subrequest tests for staticweb

This is an followup for
https://review.openstack.org/#/c/227204

Above patch changes staticweb to use just make_env instead of
pre authed env. The tests included in this patch assert
"backend requests generated by staticweb *NEVER* include pre
authed information (i.e. authorize_override=True)".

Change-Id: Ifbbc43d3b5ac114bc3d5e4fcab9cacdf9a3f1a5c

clayg/swift,notmyname/swift,redbo/swift,openstack/swift,tipabu/swift,smerritt/swift,clayg/swift,levythu/swift,swiftstack/swift,nadeemsyed/swift,mjwtom/swift,psachin/swift,williamthegrey/swift,smerritt/swift,matthewoliver/swift,nadeemsyed/swift,prashanthpai/swift,aerwin3/swift,williamthegrey/swift,tipabu/swift,hurricanerix/swift,hurricanerix/swift,clayg/swift,mjwtom/swift,smerritt/swift,revoer/keystone-8.0.0,openstack/swift,rackerlabs/swift,daasbank/swift,psachin/swift,psachin/swift,bkolli/swift,notmyname/swift,rackerlabs/swift,openstack/swift,tipabu/swift,psachin/swift,thiagodasilva/swift,swiftstack/swift,larsbutler/swift,hurricanerix/swift,larsbutler/swift,aerwin3/swift,levythu/swift,revoer/keystone-8.0.0,nadeemsyed/swift,thiagodasilva/swift,hurricanerix/swift,matthewoliver/swift,bkolli/swift,smerritt/swift,redbo/swift,notmyname/swift,swiftstack/swift,openstack/swift,clayg/swift,nadeemsyed/swift,daasbank/swift,matthewoliver/swift,notmyname/swift,tipabu/swift,matthewoliver/swift,prashanthpai/swift