bts: as_rsl_meas_res(): tolerate low RxLev in early reports
The MS is not guaranteed to begin transmitting immediately after activation of the respective logical channel. There is typically a short interval during which the BTS receives no bursts. Consequently, the initial RSL measurement reports are expected to indicate poor RxLev/RxQual values.
We already tolerate bad RxQual values; however, sporadic failures still occur due to low RxLev in the very first report. Extend the logic in f_build_meas_res_tmpl() to tolerate low RxLev as well.
Change-Id: Ic632917d429ec597dba524bf79749944cf1fc628 Related: 8ce558dd ("bts: as_rsl_meas_res(): tolerate bad RxQual in early reports") Related: OS#6933
hnbgw: TC_rab_assign_mgcp_to: Allow hnbgw to tear down CN conn at SCCP level
Newer versions of osmo-hnbgw will be tearing down the CN conn at SCCP level by transmitting an RLSD in this scenario, instead of sending a Iu RANAP Release Request crafted by the osmo-hnbgw itself. The HNBGW is expected to forward RANAP messages between UE/HNB and CN, not to generate them.
