Add a _ at the end of reseller_prefix default.
Add a _ at the end of reseller_prefix default.

- Fixes bug 971592.

Change-Id: Ic9edb2b8b0043413e4ec16de9c669646ae4230a6

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