add migration migrate.cfg file to the python package
add migration migrate.cfg file to the python package

Fixes bug 1084595

Change-Id: Ief0789a15e6433badfa5696a876d2f486de5075b

sileht/aodh,NeCTAR-RC/ceilometer,rickerc/ceilometer_audit,m1093782566/openstack_org_ceilometer,JioCloud/ceilometer,rackerlabs/instrumented-ceilometer,NeCTAR-RC/ceilometer,JioCloud/ceilometer,chungg/aodh,mathslinux/ceilometer,froyobin/ceilometer,openstack/aodh,citrix-openstack-build/ceilometer,cernops/ceilometer,rickerc/ceilometer_audit,chungg/aodh,citrix-openstack-build/ceilometer,idegtiarov/ceilometer,m1093782566/openstack_org_ceilometer,shootstar/ctest,JioCloud/ceilometer,fabian4/ceilometer,eayunstack/ceilometer,fabian4/ceilometer,luogangyi/Ceilometer-oVirt,luogangyi/Ceilometer-oVirt,isyippee/ceilometer,froyobin/ceilometer,dreamhost/ceilometer,openstack/aodh,rickerc/ceilometer_audit,isyippee/ceilometer,idegtiarov/ceilometer,ityaptin/ceilometer,Juniper/ceilometer,eayunstack/ceilometer,NeCTAR-RC/ceilometer,mathslinux/ceilometer,openstack/ceilometer,r-mibu/ceilometer,dreamhost/ceilometer,cernops/ceilometer,redhat-openstack/ceilometer,redhat-openstack/ceilometer,shootstar/ctest,maestro-hybrid-cloud/ceilometer,MisterPup/Ceilometer-Juno-Extension,tanglei528/ceilometer,pczerkas/aodh,MisterPup/Ceilometer-Juno-Extension,citrix-openstack-build/ceilometer,openstack/ceilometer,maestro-hybrid-cloud/ceilometer,sileht/aodh,pkilambi/ceilometer,tanglei528/ceilometer,rackerlabs/instrumented-ceilometer,pkilambi/ceilometer,r-mibu/ceilometer,Juniper/ceilometer,tanglei528/ceilometer,ityaptin/ceilometer,pczerkas/aodh,rackerlabs/instrumented-ceilometer