Change the build-appliance image to include current git trees of the
separate bitbake/openembedded-core/meta-yocto repositories, instead of
the merged poky repository as that is being discontinued.
[ YOCTO #16002 ]
(From OE-Core rev: 501e78ea84979d175f5e6b7978c669f3f80a4355)
(From OE-Core rev: 57dbe13f87cc2cfc87ed12dcca12382ba710be94)
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>