Fix mmd.copy calls to support PackagerV3

Fixes #1685

tests/test_web/test_submit.py

@@ -300,6 +300,36 @@ class TestUtilsComponentReuse:
             assert username_arg == username
         rmtree(module_dir)
 
+    @mock.patch("module_build_service.web.submit.submit_module_build")
+    def test_submit_module_build_from_yaml_packager_v3(self, mock_submit):
+        """
+        Tests local module build from a yaml file with the skiptests option
+
+        Args:
+            mock_submit (MagickMock): mocked function submit_module_build, which we then
+                inspect if it was called with correct arguments
+        """
+        module_dir = tempfile.mkdtemp()
+        modulemd_yaml = read_staged_data("v3/mmd_packager")
+        modulemd_file_path = path.join(module_dir, "testmodule.yaml")
+
+        username = "test"
+        stream = "dev"
+
+        with io.open(modulemd_file_path, "w", encoding="utf-8") as fd:
+            fd.write(modulemd_yaml)
+
+        with open(modulemd_file_path, "rb") as fd:
+            handle = FileStorage(fd)
+            submit_module_build_from_yaml(
+                db_session, username, handle, {}, stream=stream, skiptests=False)
+            mock_submit_args = mock_submit.call_args[0]
+            username_arg = mock_submit_args[1]
+            mmd_arg = mock_submit_args[2]
+            assert mmd_arg.get_stream_name() == stream
+            assert username_arg == username
+        rmtree(module_dir)
+
     @mock.patch("module_build_service.web.submit.generate_expanded_mmds")
     def test_submit_build_new_mse_build(self, generate_expanded_mmds):
         """