tests: Permit multiple GO negotiation failures

tests: Permit multiple GO negotiation failures

In this test the station will do a P2P find and then send a GO
negotiation request. However, the other station may not be on the listen
channel at the time when the action frame is transmitted. In this case,
the find/GO neg request sequence is restarted.

The test currently times out if this sequence fails twice in a row. Be
more tolerant to this type of failure and increase the timeout.

It may also be possible to improve the retransmit strategy.

Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Reviewed-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>