* [VAMOS] BTS: add MODE MODIFY test cases
* [VAMOS] BTS: add CHANnel ACTIVation test cases
* HACK: allow running parallel BTS_Tests.ConnHdlr components
* BTS_Tests: accept templates as parameters in t_EITC()
* BTS_Tests: make it less private and more friendly
* BTS_Tests: use as_l1_exp_lapdm() in f_TC_rll_est_req()
* BTS_Tests: accept optional TestSpecUnion in t_Pars