fix(units): restore v0.12.0 units for old deisctl client

Users explicitly trying to install the v0.12.0 `deisctl` client are then getting slightly updated unit files, including the removal of *deis-builder-data* and the *EXPOSED_PORT* change, which are incompatible with deis release v0.12.0. This change restores the v0.12.0 unit files to this old repository, which the v0.12.0 `deisctl` is referencing.