meta-google: gbmc-bridge: Prefer using stateful source

The stateless addr has some routing issues outside of the machine under
some ToR configs. Use the stateful address as a preference to avoid
these issues.

Change-Id: I6a30678fd95b5096ee6b3b8add1d1dd409f0db5f
Signed-off-by: William A. Kennington III <wak@google.com>