Simpleran: Fix Amarisoft version and mock lte software for tests
We now set a fixed amarisoft version in the software release. This decision was made because too many bugs and changes are present in the older amarisoft version, so this will simplify the software release and force the clients to upgrade. A hidden parameter allows to change the version.
I added a software that mocks lteenb, ltemme, lteims and lteue in order to avoid disabling so many promises during unit testing (we cannot run lte software in test nodes because it is proprietary and requires SDR hardware).
There is also a few new features in this SR, such as support of inter 4G / 5G handover (between eNB and gNB of different BBUs). Please check the changelog for those.
I will merge this today once the tests pass on the test suite (they already passed theia with slapos-sr-testing).