selftest: Add argument to keep build dir
The oe-selftest code already keeps the selftest build directory in place
if any tests failed. By default the build directory is deleted if all
tests pass but there may be cases where it's desirable to keep this
directory around, for example to compare intermediate files between
passing and failing test runs.
Signed-off-by: Paul Barker <pbarker@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit
67aa7069dbe8f5f5f186eb67708ece5c4bd42976)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
