gbproxy: Increemnt many timeouts from 1s to 2s.

Sending a message [even over a real or simulated E1 line] should always
be less than 1s end-to-end.  But just to see if increasing the timeouts
to 2s will result in less test failures, let's change from 1s to 2s.

Change-Id: Iebb43283ad7c267c6ed7f49989ec453be38956a9
1 file changed