selftest/wic: extending test coverage for WIC script options
The previous WIC script selftest didn't cover all of its command line
options. Some option variants were included in existing test cases and
the following tests were added to complete covering them:
1552 Test wic --version
1553 Test wic help create
1554 Test wic help list
1555 Test wic list images
1556 Test wic list source-plugins
1557 Test wic listed images help
1558 Test debug
1563 Test skip build check
1564 Test build rootfs
1559 Test image vars directory selection
1562 Test alternate output directory
Signed-off-by: Jair Gonzalez <jair.de.jesus.gonzalez.plascencia@linux.intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
