Fix wrong assert in manager unit test, self._assert(len(m.servers), 4) don't check that number of servers equal 4.
Fix wrong assert in manager unit test, self._assert(len(m.servers), 4)
don't check that number of servers equal 4.

Change-Id: I4a597eaf2b16b5b2cfc7fd706ac024357e9af2c2

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