Fix to not use deprecated Exception.message
Fix to not use deprecated Exception.message

Use of Exception.message has been deprecated since Python 2.6 so it
shouldn't be used.

Change-Id: I1bba9120a7ae795616e89d8ae222157d7a0e07f4

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