Merge branch 'integration_2020_wk45' into 'develop'
MR902 Nr mac ssb ro ue idcc - Construction of SSB-RO mapping table on the UE - RO selection based on SSB index - RACH preamble selection based on SSB index in a selected RO - RA-RNTI calculation MR928 nr: add MAC PDU traces for wireshark - The T tracer macpdu2wireshark has been modified to handle the new traces. The usage is the same as for LTE. MR929 RA fixes for NR UE MR938 CI: Parse UE TUN interface correctly in S1 mode - The TUN interface configuration is changed to use program "ip" only. - The CI script parsing is changed accordingly: the pipeline will recognize the attempt to bring up the interface of the first UE. MR933 nr rlc: bugfix - ret.next was not set in a particular case