fix(Makefile): ignore status of data services in `make start`

The fleet status-matching regexes in the main Makefile didn't take
into account the addition of *-data.service jobs, and were therefore
reporting on both the status of deis-registry.service and
deis-registry-data.service. This PR appends a dot to each regex to
avoid matching the *-data.services.
fix(systemd units): Fix docker containers being orphaned

Docker seems to orphan our containers after the fix in 6b452e,
this reverts part of it and properly signals the docker containers to
stop. Given that we run them with `--rm`, this also makes the ephemeral
containers destroy their data off of the drives. The data containers are
not affected by this and they persist.
Merge pull request #1381 from deis/fix/gh-1378/orphaned-containers

fix(systemd units): Fix docker containers being orphaned
Merge pull request #1371 from deis/makefile-status-fix

fix(Makefile): ignore status of data services in `make start`
fix(confd): simplify check_cmd and fix grep usage