Added exclusion of test code.
Added exclusion of test code.

The important part is to ignore the third-party libraries pulled in. ORT
mostly complains about Python libraries used by tuf-test-vectors. The
test code in the src directory is probably fine.

Signed-off-by: Patrick Vacek <a38520cbbe2e974bc8b7ea86877dd3c7115ca2d7@gmail.com>

advancedtelematic/aktualizr,advancedtelematic/aktualizr,advancedtelematic/aktualizr,advancedtelematic/sota_client_cpp,advancedtelematic/sota_client_cpp,advancedtelematic/aktualizr