termite: move TCP connection handling to separate file.
termite: clean up workerConn.
cba, termite, attr: inject Timings.

This gets rid of spurious RPC registration warnings.
termite: drop log from test.
termite: clean up getopt test.
termite: suppress RPC registration warnings from Worker
termite: hide RPC registration warnings for Coordinator.
termite: drop spurious log line.
termite: hide Mirror.Shutdown.