Cleanup service unit tests and restructure some service create logic.

Signed-off-by: Daniel Nephin <dnephin@gmail.com>
Add a no-build option to fig up, to save time when services were already freshly built.

Signed-off-by: Daniel Nephin <dnephin@gmail.com>
Merge pull request #7 from dnephin/speed_up_fig_up

Speed up fig up