Add test to trigger re-establishment to RFSIM F1 CI
* trigger re-establshemnt on DU: reset RLC counters on DRB 1 for OAI UE, since SRB 1 does not work for lack of periodic measurements reports * how is the re-establishment triggered? * a transmission on DRB 1 occurs * detection of a mismatch of RLC counters at the UE side * max number of RLC retransmissions reached * RLF detection * verify re-establishment on CU: we ping the core from the UE; this sends packets on DRB, and because the sequence number mismatches, will trigger a reestablishment. We accept in the ping that a couple of packets might be lost; after ping is over, reestablishment must be done as well (else the ping will already fail).
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