Changes

Move RAN_Configurations module parameter definition to *_Tests.default

This way we can easily tweak values, which usually involve other
programs' config like osmo-stp, without needing to recompile ttcn-3.
Furthermore, we avoid ending up in the situation where the .ttcn file
contains invalid data which is alwayred overridden in .default, like it
happened in MSC_Tests.ttcn.

Change-Id: Id7e77a2ecf68520a853dc35fe0013a0611e744a1