a key, value mapping of engine name to engine path in the
o3de_manifest.json file
Added a pytest to validate the new engine_name -> engine_path
functionality and registered those test with CTest.
Fixed miscellaneous issues in the registration.py around incorrect
return values for get_*_data functions where some of the returns values
were integers where the return value should have been None
lumberyard-employee-dm
548219d117