Comment 7 for bug 1562701

Interestingly, every time rabbitmq crashes in centos gate, the task "Creating admin project, user, role, service, and endpoint" in ansible/roles/keystone/tasks/register.yml fails as well with the error "ValueError: No JSON object could be decoded".

http://logs.openstack.org/52/300852/2/check/gate-kolla-dsvm-deploy-centos-binary/ec324e9/console.html#_2016-04-05_03_07_36_211