Adds a test to validate that multiconfigs can independently mask off
recipes by setting BBMASK. See the test description for further
information about how the test works.
(Bitbake rev: 513fc2dddf13d5e344162c26d89d2dde2fe85634)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>