Add a unit test to verify proxy logging fields

Also bring unit test coverage to 100% (well, at least every line is
reported as "covered").

Change-Id: I659d0c02008368897b1307a7a5c9aaba73b80588
Signed-off-by: Peter Portante <peter.portante@redhat.com>
Merge "Add a unit test to verify proxy logging fields"