upgrade to gitlab-ce 7.3.1
release 7.3.1
init: use the `-e` mysql flag to specify the query
init: replace `-uroot` with `-u ${DB_USER}` in the mysql commands
init: automatically run `gitlab:setup` rake task

Refer #154
init: do no silence migration errors
init: wait for database server to come online
readme: users do not need to execute the `gitlab:setup` rake task anymore
plug bash vulnerability by switching to dash shell
release 7.3.1-1
install: specify `dash` shell while creating the git user
init: specify the DB_HOST in all mysql commands
release 7.3.1-2
fix password flag in mysql related commands
Merge pull request #157 from aidan-/master

fix password flag in mysql related commands
release 7.3.1-3
Add fig.yml support
Use postgres database instead of mysql (recommended by gitlab)
Merge branch 'harbur-fig_support'
updated changelog