Integration 2021 wk42 b

MR !1277 (merged) : fixes for nr_set_pdsch_semi_static
MR !1225 (merged) : Cleanup and first step to enhance cpu measurments
MR !1278 (merged) : NR cleanup separation macphy
MR !1289 (merged) : Nr dlsch retransmission fix pucch allocation
MR !1270 (merged) : Removing hardcoded value of min channel bw for type0 pdcch
MR !1283 (merged) : Bugfix simultaneous RACH with multiple UEs
cherry-picks :
MAC statistics in separate thread
CI conf files update