Stop/cp_stop_check: ArgumentDefaultsHelpFormatter
Stop/cp_stop_check: ArgumentDefaultsHelpFormatter

With RawTextHelpFormatter, the help text is has a right margin and is
therefore easier to view.

Change-Id: I13d9cde391d05738a25414372b199e2047a29bfb
Signed-off-by: Michael Walsh <10404802c7de463f402c4a18638106ca1b12ef61@us.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation