Add version so that pre-release versioning works
Add version so that pre-release versioning works

As a server project, keystone should list a version number in setup.cfg
so that the version numbers products in daily tarballs list the
pre-release alpha designation.

Change-Id: I1aff86b0890f2d215d00b0c1f19cca3798ae88ec

nuxeh/keystone,ntt-sic/keystone,dims/keystone,takeshineshiro/keystone,ajayaa/keystone,rickerc/keystone_audit,cloudbau/keystone,reeshupatel/demo,maestro-hybrid-cloud/keystone,himanshu-setia/keystone,ilay09/keystone,ntt-sic/keystone,idjaw/keystone,derekchiang/keystone,citrix-openstack-build/keystone,rushiagr/keystone,dims/keystone,openstack/keystone,klmitch/keystone,ging/keystone,reeshupatel/demo,derekchiang/keystone,cloudbau/keystone,townbull/keystone-dtrust,rodrigods/keystone,dsiddharth/access-keys,jonnary/keystone,dstanek/keystone,himanshu-setia/keystone,promptworks/keystone,rajalokan/keystone,jumpstarter-io/keystone,citrix-openstack-build/keystone,MaheshIBM/keystone,promptworks/keystone,ilay09/keystone,jumpstarter-io/keystone,vivekdhayaal/keystone,cernops/keystone,nuxeh/keystone,jamielennox/keystone,roopali8/keystone,townbull/keystone-dtrust,blueboxgroup/keystone,UTSA-ICS/keystone-kerberos,cernops/keystone,ntt-sic/keystone,vivekdhayaal/keystone,reeshupatel/demo,cloudbau/keystone,JioCloud/keystone,idjaw/keystone,UTSA-ICS/keystone-kerberos,rickerc/keystone_audit,derekchiang/keystone,ging/keystone,dstanek/keystone,vivekdhayaal/keystone,jamielennox/keystone,klmitch/keystone,jonnary/keystone,promptworks/keystone,rickerc/keystone_audit,maestro-hybrid-cloud/keystone,dsiddharth/access-keys,mahak/keystone,takeshineshiro/keystone,roopali8/keystone,citrix-openstack-build/keystone,dsiddharth/access-keys,MaheshIBM/keystone,dstanek/keystone,rushiagr/keystone,ilay09/keystone,openstack/keystone,nuxeh/keystone,rajalokan/keystone,blueboxgroup/keystone,townbull/keystone-dtrust,jumpstarter-io/keystone,rodrigods/keystone,mahak/keystone,ajayaa/keystone,JioCloud/keystone,rushiagr/keystone,openstack/keystone,mahak/keystone,rajalokan/keystone