Function "contains_lfs" was only looking at the master branch when searching for LFS
content. LFS may be configured in specific branches only, so we need to use the
correct branch.
(Bitbake rev: 4fa67c2af830035a1ddedc14592ee25a15ebff22)
Signed-off-by: Mauro Queiros <maurofrqueiros@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>