Add some tests to demonstrate hash_cleanup_listdir
Add some tests to demonstrate hash_cleanup_listdir

We add some tests to verify various behaviors of
hash_cleanup_listdir(), and break them into individual tests so that
one failure won't prevent the others from running as well.

Change-Id: I4f52388d813f061b8e7d2b45dfb0f805689020c2

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