This is meant to be a list of strings not a single string. For example,
this is overwriting the default in OESDKTestContextExecutor which is:
default_cases = [os.path.join(os.path.abspath(os.path.dirname(__file__)), 'cases')]
(From OE-Core rev: 867e0a9c571b7bc9a37e6d893f7d75e03fa218a5)
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
234b7ce514