Description of problem:

For many super privileged containers we need to bind mount the root of the filesystem into the container. We can't do this with docker docker-1.7.0-22.gitdcff4e1.fc23.x86_64. This should not be a long lived bug since docker 1.8 (which does not have this problem) will land shortly after release but we needed a BZ for common bugs. 


```
-bash-4.3# rpm -q docker
docker-1.7.0-22.gitdcff4e1.fc23.x86_64
-bash-4.3# docker run -it --rm --privileged -v /:/host busybox
Error response from daemon: Relabeling of / is not allowed
-bash-4.3#
```