Update ubuntu dockerfiles for formatting

dev/vagrant/bootstrap.sh

doc/vagrant-dev-env.rst

docker/aodh/aodh-api/Dockerfile.j2

docker/aodh/aodh-base/Dockerfile.j2

docker/aodh/aodh-evaluator/Dockerfile.j2

docker/aodh/aodh-expirer/Dockerfile.j2

docker/aodh/aodh-listener/Dockerfile.j2

docker/aodh/aodh-notifier/Dockerfile.j2

docker/base/Dockerfile.j2

docker/ceilometer/ceilometer-api/Dockerfile.j2

docker/ceilometer/ceilometer-base/Dockerfile.j2

docker/ceilometer/ceilometer-central/Dockerfile.j2

docker/ceilometer/ceilometer-collector/Dockerfile.j2

docker/ceilometer/ceilometer-compute/Dockerfile.j2

docker/ceilometer/ceilometer-notification/Dockerfile.j2

docker/ceph/ceph-base/Dockerfile.j2

docker/cinder/cinder-api/Dockerfile.j2

docker/cinder/cinder-backup/Dockerfile.j2

docker/cinder/cinder-base/Dockerfile.j2

docker/cinder/cinder-rpcbind/Dockerfile.j2