AVX-55377: ensure pytest exits nonzero for result publishing failure (#3

)

Signed-off-by: Steven Noonan <steven@uplinklabs.net>

pytest_testrail/plugin.py

@@ -699,6 +699,11 @@ def add_results(self, testrun_id):
                 )
             )
 
+            # Exit with a nonzero exit code to express that an error occurred
+            # during results publishing. The GitHub Actions runners need to be
+            # aware of it.
+            session.exitcode = pytest.ExitCode.INTERNAL_ERROR
+
     def create_test_run(
         self,
         assign_user_id,