Some of our files didn't have a copyright notice at all, let's add it. Also, update the notices in other files and ensure a SPDX identifier is present in all but the most trivial files. Change-Id: If7fa19ce484b415bc645e39b3d0d666b44b5f0fd
We want to use those also from the HLR_Tests, not just from MSC_Tests. Change-Id: I22be6c03d85dc6d6a8266b5ebce5d0c69c0551ed