Use getopts for parsing the command line. This changes the usage so that
if a commit (to-be-tested) is defined it must be given by using '-c',
instead of a positional argument.
(From OE-Core rev: b1f77ba41033397a2b25977963682b86f2f76471)
Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>