Create systemd unit file

PIVOTAL_TRACKER_STORY_URL=https://www.pivotaltracker.com/story/show/81819750
PIVOTAL_TRACKER_STORY_TYPE=feature
PIVOTAL_TRACKER_STORY_ESTIMATE=2
PIVOTAL_TRACKER_STORY_OWNER=carlsaturnino
PIVOTAL_TRACKER_STORY_REQUESTER=kdecastro
PIVOTAL_TRACKER_STORY_LABELS=docker images, docker-register
What do you mean? We are exposing the environment variables by using "-e."  The format of the etcd keys are based from the config section in the SRS template.