TC_early_immediate_assignment BTS_Tests

Failing for the past 3 builds since #9

Took 9.3 sec (from Titan)

Stack Trace

"BTS_Tests.ttcn:2493 : Timeout waiting for CHAN-RQD from RACH REQ <23, 137>"
      BTS_Tests.ttcn:9601 BTS_Tests control part
      BTS_Tests.ttcn:9038 TC_early_immediate_assignment testcase