Add unit test for upload --clear_dest

- Test --clear_dest in one of the test cases.
- Fix mock SuiteResMsg.

Bug: 79905934
Test: PYTHONPATH=$PYTHONPATH:../.. python -m host_controller.command_processor.command_upload_test
Change-Id: I880dcabd6044ad0ea1734e13bb9581d5c858123d