* library/RSL_Types: add params argument to ts_RSL_MultirateCfg
* BSC_Tests: fix TC_assignment_osmux_cn: use c_mr_conf_5_90
* BSC_Tests: use c_mr_conf_5_90 in TC_assignment_codec_amr_startmode_cruft
* BSC_Tests: cosmetic: s/mr_conf_amr_5_90/c_mr_conf_5_90/
* library/RSL_Types: s/amr_codec_modes/codec_modes/ in RSL_IE_MultirateCfg
* BTS_Tests[_VAMOS]: use default param values for ts_RSL_MultirateCfg
* fixup: bsc: Add testscase & infra to validate Osmux support BTS<->BSC