Many Chameleon tests don't run on ChromeBoxes and ChromeBits by checking the board type, like:

    if test_mirrored and not host.get_board_type() == 'CHROMEBOOK':
        raise error.TestNAError('DUT is not Chromebook. Test Skipped')

For early development phase, the board name is defined as "REFERENCE", not "CHROMEBOOK". This case we still want to run the tests.

We may change the condition to:

    if test_mirrored and host.get_board_type() in ['CHROMEBOX', 'CHROMEBIT']:
        ...