integration tweaks for mlab_utility slice

The result of these patches is running on mlab_utility@mlab1.nuq0t 

So, ports 80/143 should be echo services, and port 4242 should be the pipeline service.

@dominichamon you can log in to check it out if you like, and make sure the pipeline acts as you expect.

I needed to rename the pipeline submodule directory to avoid name conflict with the pipeline binary; maybe there is a better way?