Remove direct dependency on uplink.RSConfig, this simplifies
moving the config file without introducing weird dependencies.
Change-Id: I7fd2a145401e0205d7047631df9d2810241efeec
Fixes a data race caused by not waiting for workers to finish
before shutting down. Currently this ended up failing logging
because it was closed when test tried to write to it.
Change-Id: I074045cd83bbf49e658f51353aa7901e9a5d074b