Add parameter `retry` in `run_all_single_board_cases()` and other similar functions (RDT-445)

the real target test cases are not as stable as the test cases for the software programs.

add a parameter `retry` to retry the unity test cases in-place after they failed.

besides, for flexibility and easy-to-use purpose

- have one cli option to configure the default retry time for duts
- make it into an attribute of Dut