TC_rsl_chan_initial_ta BTS_Tests

Regression

Failing for the past 1 build since #577

Took 2.1 sec (from Titan)

Stack Trace

TA in L1 header does not match the signaled (RSL) TA.
      BTS_Tests.ttcn:9407 BTS_Tests control part
      BTS_Tests.ttcn:3932 TC_rsl_chan_initial_ta testcase