Draft: Add CI UE test for RA with C-RNTI

Guido Casatirequested to merge
add-ci-test-msg3-c-rnti-ra into develop

This MR is adding a test to trigger RA with C-RNTI in the RFSIM 24 PRB pipeline. A telnet command was added.

The actions taken are:

  1. send telnet command to trigger RA with C-RNTI
  2. sleep
  3. ping test

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