ttcn3-cbc: Adapt ports in osmo-cbc.git to default ttcn3 ones
This is intended to ease adding new emulated MMEs and BSCs by using next available port strting from the one defined in the TTCN3 test module parameter.
ttcn3-cbc: Disable gsmtap_log debug for dasn1c category
This category prints incredibly large output of ASN1c encoder/decoder, which clogs the logging subsystem while debugging general issues. Since the encoder/decoder is somehow determenistic, let's disable logging all the debugging; it can be enabled by the user when specifically debugging any enc/dec related issue.
