There was a crash when we exit the nr softmodem with AW2S device.
The array rxbase[] was surely freed() by some other thread, so
let's not access it after detecting oai_exit != 0.

We also need to unblock a possible reader thread. The chosen way to
do may be not the best. To be checked.

integration_2023_w02

See merge request oai/openairinterface5g!1906

!1796 Make SFN dependent on GPS time
!1874 Processing time optimization for SRS
!1881 Fix documentation of dot_product()
!1884 Prevent Msg3 to be scheduled in downlink slot when nrofUplinkSymbols = 0 and DDDSU
!1888 Adopting new BWP structure at UE (first MR)
!1890 Fix setup_time overflow in VNF processing thread
!1892 system.c cleaning check result of system call
!1893 fix buildhelper Soapy folder name, case not respected, reinstall was broken
!1894 doc(ci): adding constraint on the branch name
!1895 ASN_SEQUENCE_ADD return code was checked only in 0.5% of calls
!1900 bugfix CU/DU: use correct IP address for GTP-U
!1901 Adding NRPPA ASN1 definitions and library
!1903 bugfix in function channelmod_modify_cmd
!1867 CI: new Python classes for SSH & Local execution
restore LDPC docs

Merge remote-tracking branch 'origin/FAPI_fix_setup_time_from_overflowing' into integration_2023_w02

Fix setup_time overflow in vnf processing thread, preventing gNB from stopping message processing once setup_time overflowed

- Mention python version and separate Python/own modules
- Use constants for registry and namespace name
- Provide OC url in oc login
- Do not perform oc logout in background

ASN_SEQUENCE_ADD return code was checked only in 0.5% of calls, existing errors not detected by sanitize address

Not only the teid is received from the DU but also the IP address. We
have to use it too.

Also, don't connect the UDP socket. The parameter remote_s_address in the
configuration file must not be used, at least not for gtp-u because the
IP address is received from the DU (plus for later, for multiple DUs, it
won't work at all).

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>