BSSAP(_LE)/RANAP: Proper counting of RESET retries
N retries means N+1 attempts.
Since M3UA_Emulation (in deps/, not in library) doesn't support pushing DUNA/DAVA as primitive up the stack, we cannot implement the related SCCP primitives which should end up sending in turn other primitives to our BSSAP(_LE)/RANAP emulations. This means we currently have no way to figure out the status of the underlying SCCP/MTP link, and our only way is implement a poor man's solution: retransmit RESET until we get an answer.
Since before bssap_reset_retries was set to 1 everywhere and we were only attempting once, it could happen that the other end (the IUT) was not yet connected to the STP when we send the RESET, and hence it is discarded the STP. In that scenario, we'd time out and fail the test. Instead, now that we do N+1 attempts, we retry after 5 seconds, which should be enough time for the peer to reconnect to the STP.
