sort DOCKER_CONFIG_KEYS move service._build_tag_name() to service.full_name in preparation for adding additional tags.
sort DOCKER_CONFIG_KEYS
move service._build_tag_name() to service.full_name in preparation for adding additional tags.

Signed-off-by: Daniel Nephin <6347c07ae509164cffebfb1e2a0d6ed64958db19@gmail.com>

Yelp/docker-compose,Yelp/docker-compose