Changes

deps/Makefile: Update titan.TestPorts.MTP3asp to upstream master

We used to point to an osmocom fork with a commit from 2018 fixing build without
MTP3asp_PT.cc/hh. That commit was merged upstream in 2020, so we can
point back to upstream.

Change-Id: Ieecb643db8bd3eb8739d960dfaaee183368b0c1d

Use newer M3UA & MTP3 deps generating MTP-STATUS,PAUSE,RESUME.ind

* titan.TestPorts.MTP3asp pointer is changed to osmocom fork containing
  extra patch adding missing fields to MTP-STATUS,PAUSE,RESUME records.
  It also adds templates for them.
* titan.ProtocolEmulations.M3UA pointer is changed to osmocom fork
  containing extra patch improving M3UA_Emulation component to build
  MTP-STATUS,PAUSE,RESUME.ind primiives when receiving DAVA/DUNA/DUPU/SCON
  from M3UA link.

The upper layers building on top of MTP3asp_PT (ie. port MTP3asp_SCCP_PT
from SCCP_MApping.ttcnp) are fine because they explicitly discard
ASP_MTP3_PAUSE,RESUME,STATUS messages in the port defintion.
Hence, supporting those in SCCP layer is left as a subsequent task.

Related: OS#6907
Change-Id: I67cc2bcf3395a81fa8acee861af01e752984ebb3