See https://github.com/projectatomic/rpm-ostree/issues/1435 and https://github.com/projectatomic/rpm-ostree/issues/1542#issuecomment-419684977
LGTM.
Ahh right, we need this for f29 too.
Pull-Request has been merged by walters
https://pagure.io/workstation-ostree-config/c/ce5cc7a4a055ec261eaee3f94515f2aba39382aa?branch=f29
See https://github.com/projectatomic/rpm-ostree/issues/1435
and https://github.com/projectatomic/rpm-ostree/issues/1542#issuecomment-419684977