Add tests on keystone for invalid path requests.
Add tests on keystone for invalid path requests.

- Add missing tests to make it coverage to 100%.

Change-Id: Ic182ad379e2c48cc4151b2532c509bd62d44bd00

matthewoliver/swift,Mirantis/swift-encrypt,openstack/swift,mjzmjz/swift,AfonsoFGarcia/swift,revoer/keystone-8.0.0,openstack/swift,Khushbu27/Tutorial,nadeemsyed/swift,openstack/swift,openstack/swift,takeshineshiro/swift,matthewoliver/swift,iostackproject/IO-Bandwidth-Differentiation,hbhdytf/mac,citrix-openstack/build-swift,matthewoliver/swift,revoer/keystone-8.0.0,hbhdytf/mac2,smerritt/swift,IPVL/swift-kilo,zaitcev/swift-lfs,notmyname/swift,orion/swift-config,tipabu/swift,sarvesh-ranjan/swift,mjzmjz/swift,levythu/swift,nadeemsyed/swift,Triv90/SwiftUml,bradleypj823/swift,hbhdytf/mac2,tsli/test,citrix-openstack-build/swift,Triv90/SwiftUml,notmyname/swift,Khushbu27/Tutorial,tipabu/swift,larsbutler/swift,anishnarang/gswift,bouncestorage/swift,clayg/swift,daasbank/swift,anishnarang/gswift,swiftstack/swift,redhat-openstack/swift,zackmdavis/swift,clayg/swift,hurricanerix/swift,scality/ScalitySproxydSwift,psachin/swift,scality/ScalitySproxydSwift,dencaval/swift,williamthegrey/swift,bkolli/swift,prashanthpai/swift,hurricanerix/swift,eatbyte/Swift,thiagodasilva/swift,shibaniahegde/OpenStak_swift,rackerlabs/swift,dpgoetz/swift,hbhdytf/mac2,shibaniahegde/OpenStak_swift,williamthegrey/swift,matthewoliver/swift,Mirantis/swift-encrypt,hurricanerix/swift,JioCloud/swift,zaitcev/swift-lfs,tipabu/swift,psachin/swift,nadeemsyed/swift,AfonsoFGarcia/swift,smerritt/swift,prashanthpai/swift,wenhuizhang/swift,larsbutler/swift,Akanoa/swift,psachin/swift,tipabu/swift,nadeemsyed/swift,citrix-openstack-build/swift,Seagate/swift,clayg/swift,redbo/swift,NeCTAR-RC/swift,hbhdytf/mac,orion/swift-config,redhat-openstack/swift,gold3bear/swift,clayg/swift,maginatics/swift,smerritt/swift,swiftstack/swift,wenhuizhang/swift,IPVL/swift-kilo,citrix-openstack/build-swift,dencaval/swift,maginatics/swift,gold3bear/swift,bkolli/swift,hbhdytf/mac2,redbo/swift,notmyname/swift,bouncestorage/swift,xiaoguoai/ec-dev-swift,xiaoguoai/ec-dev-swift,takeshineshiro/swift,iostackproject/IO-Bandwidth-Differentiation,mjwtom/swift,aerwin3/swift,smerritt/swift,daasbank/swift,rackerlabs/swift,sarvesh-ranjan/swift,Akanoa/swift,Em-Pan/swift,psachin/swift,NeCTAR-RC/swift,aerwin3/swift,Seagate/swift,thiagodasilva/swift,dpgoetz/swift,tsli/test,Em-Pan/swift,JioCloud/swift,notmyname/swift,swiftstack/swift,levythu/swift,eatbyte/Swift,zackmdavis/swift,mjwtom/swift,bradleypj823/swift,hurricanerix/swift