Merge "Remove Fedora support"

ansible/group_vars/all.yml

doc/image-building.rst

doc/quickstart.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/barbican/barbican-api/Dockerfile.j2

docker/barbican/barbican-base/Dockerfile.j2

docker/barbican/barbican-keystone-listener/Dockerfile.j2

docker/barbican/barbican-worker/Dockerfile.j2

docker/base/Dockerfile.j2

docker/bifrost/bifrost-deploy/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