Fixes bug 851016.
Fixes bug 851016.

Fixed test_migrations.py so that it runs migrations again. It will also now fail if test_migrations.conf cannot be found.

Change-Id: I669cc1dda1dc247dc86c6e271b00d296f8445a15

rajalokan/glance,vuntz/glance,saeki-masaki/glance,redhat-openstack/glance,ozamiatin/glance,saeki-masaki/glance,akash1808/glance,dims/glance,SUSE-Cloud/glance,rickerc/glance_audit,akash1808/glance,kfwang/Glance-OVA-OVF,tanglei528/glance,rajalokan/glance,sigmavirus24/glance,stevelle/glance,ozamiatin/glance,JioCloud/glance,openstack/glance,citrix-openstack-build/glance,stevelle/glance,ntt-sic/glance,wkoathp/glance,vuntz/glance,JioCloud/glance,citrix-openstack-build/glance,takeshineshiro/glance,scripnichenko/glance,jumpstarter-io/glance,sigmavirus24/glance,cloudbau/glance,SUSE-Cloud/glance,ntt-sic/glance,takeshineshiro/glance,darren-wang/gl,openstack/glance,openstack/glance,darren-wang/gl,paramite/glance,klmitch/glance,cloudbau/glance,tanglei528/glance,paramite/glance,rickerc/glance_audit,dims/glance,klmitch/glance,redhat-openstack/glance,jumpstarter-io/glance,kfwang/Glance-OVA-OVF,wkoathp/glance,scripnichenko/glance