Move certain content from client/ to server/site_utils.py

This moves the lab status functions and ParseBuildName().  They
were out of place in client/common_lib, as they're only needed/
meaningful in server side code.

BUG=None
TEST=run driver_unittest.py

Change-Id: I756291f27d7b041f0a907dee4004c3b447def929
Reviewed-on: https://chromium-review.googlesource.com/178306
Reviewed-by: Richard Barnette <jrbarnette@chromium.org>
Commit-Queue: Richard Barnette <jrbarnette@chromium.org>
Tested-by: Richard Barnette <jrbarnette@chromium.org>
7 files changed