There are a number of timers in RRC. Those are not or only partially
implemented, and certainly don't work in F1. Hence, remove them to
replace with a better implementation later.

Tutorials: update ubuntu iso download link to 22.04.2, update Windows Quectel driver version, remove nokrnmod flag, it is enabled by default

- CI_OC_RAN_NAMESPACE for RAN images
- CI_OC_CORE_NAMESPACE for CN deployment
- usage of the created constants for pulling images from cluster, CN deployement, iperf/ping

- IPERF3 option created in cls_oaicitest.py
- retrieval of CN amf and traffic-server IP address from pods
- modification of gNB config file (do_SRS set, max UL MCS increased), removal of unused config file
- change of AmariUE config file to support 2x2
- modification of xml file for aw2s pipeline - iperf test added
- new xml file for cleanup (terminate AmariUE, clean test server images) created

Can be handled using static IP addresses, currently not used

Refactor ping: shorten function, don't use useless variables, PingNoS1 not supported (we don't use it)

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