Remove excess brackets in exception creation
Remove excess brackets in exception creation

Change-Id: I43cd3bf9f9423657324fa5ecb181dc1f2d7e7d8d

maestro-hybrid-cloud/keystone,vivekdhayaal/keystone,openstack/keystone,openstack/keystone,promptworks/keystone,jumpstarter-io/keystone,takeshineshiro/keystone,jamielennox/keystone,UTSA-ICS/keystone-kerberos,himanshu-setia/keystone,dims/keystone,jonnary/keystone,jumpstarter-io/keystone,ilay09/keystone,rajalokan/keystone,UTSA-ICS/keystone-kerberos,mahak/keystone,openstack/keystone,ilay09/keystone,promptworks/keystone,rushiagr/keystone,nuxeh/keystone,jamielennox/keystone,mahak/keystone,ilay09/keystone,nuxeh/keystone,cernops/keystone,jumpstarter-io/keystone,rushiagr/keystone,ajayaa/keystone,rajalokan/keystone,idjaw/keystone,klmitch/keystone,maestro-hybrid-cloud/keystone,dstanek/keystone,himanshu-setia/keystone,roopali8/keystone,nuxeh/keystone,rajalokan/keystone,roopali8/keystone,idjaw/keystone,klmitch/keystone,jonnary/keystone,rushiagr/keystone,mahak/keystone,vivekdhayaal/keystone,promptworks/keystone,dstanek/keystone,dims/keystone,takeshineshiro/keystone,ajayaa/keystone,cernops/keystone,vivekdhayaal/keystone,dstanek/keystone