In MSC_Tests.default we expect /tmp/mncc.sock as MNCC socket path -
let's match this expectation with osmo-msc.cfg to make sure that tests
work out of the box without the need to use specific command-line
option.
Change-Id: I540645ef4b1e08d05b89251f074af84a516e7a88
Update MSC_Tests.default according to the current MSC_Tests.cfg
used by docker-playground.
Add osmo-msc.cfg and osmo-stp.cfg example configuration files.
Allows the MSC tests to be run locally.
Change-Id: Ia00f0315a5246c3ec55563ebd21a586aec8e4688