bts: Add TC_pcu_rts_req() to verify PCUIF_RTS_REQ

This new test verifies that the expected amount of PCUIF_RTS_REQ are
observed on the PCU Interface for both PTCCH and PDTCH.

Change-Id: Ic27cdd4f4adf11f871b84bd72692a03280274fe2
Related: OS#4023
1 file changed