bsc: Reduce TC_bssap_rlsd_does_not_cause_bssmap_reset to 4 lchan

This test establishes an SDCCH for each iteration.  However,
* due to OS#3333, osmo-bsc is currently not properly releasing those
  lchan's,
* due to OS#3222, we furthermore don't allocate "larger" channels like TCH

and as a result on a combined CCCH system we only have 4 SDCCH, which
is less than the 8 that we try to use here.

Change-Id: I0f7fff54248a505387bdfe105259e8ad10ce6c77
Related: OS#3333
Related: OS#3332
1 file changed