Merge branch 'unit-tests' into 'develop'

build/common/CMakeLists.txt

build/common/Dockerfile.unit-tests.ubuntu

build/scripts/build_common

build/scripts/build_helper

build/scripts/build_helper.common

common/CMakeLists.txt

itti/itti_async_shell_cmd.hpp

logger/CMakeLists.txt

logger/lttng_logger_base.hpp

nas/CMakeLists.txt

nas/test/CMakeLists.txt

nas/test/test_msg.cpp

ngap/CMakeLists.txt

ngap/ngap_ies/AmfUeNgapId.cpp

ngap/ngap_ies/Cause.cpp

ngap/ngap_ies/CriticalityDiagnostics.cpp

ngap/ngap_ies/DrbStatusDl.cpp

ngap/ngap_ies/DrbStatusDl12.cpp

ngap/ngap_ies/DrbStatusDl12.hpp

ngap/ngap_ies/DrbStatusDl18.cpp