bsc: Fix tests TC_si2quater_*_earfcns

Update TC_si2quater_*_earfcns test to trigger Tx of SI2quater eutran
neigh list properly, by sending a CommonID with "Last Used E-UTRAN PLMN
ID" IE. This should have been updated in a recent commit (see
below).

Fixes: 841b90daf281c4bdeb73fb2956f195c88e2bff4c
Related: SYS#5337
Change-Id: I3073152475a338b29214393a9b550891d52e1f24
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 1f8f951..16afbf8 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -2366,6 +2366,9 @@
 		var DchanTuple dt;
 
 		dt := f_est_dchan('23'O, 23, '00010203040506'O);
+		/* Send CommonID with some random PLMN (BSC doesn't take it into account
+		 * yet when generating the EUTRAN neigh list in RR CHannel Release) */
+		BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_CommonId('001019876543210'H, '323454'O)));
 
 		/* Instruct BSC to clear channel */
 		var BssmapCause cause := 0;