Fix start of containers with custom root filesystem
Fix start of containers with custom root filesystem

A prefix change to unmount the SELinux filesystem broke starting
of LXC containers with a custom root filesystem

trainstack/libvirt,olafhering/libvirt,novel/fbsd-libvirt,andreabolognani/libvirt,warewolf/libvirt,bjzhang/libvirt,warewolf/libvirt,rlaager/libvirt,crobinso/libvirt,shugaoye/libvirt,agx/libvirt,agx/libvirt,emaste/libvirt,siboulet/libvirt-openvz,novel/fbsd-libvirt,bjzhang/libvirt,cbosdo/libvirt,warewolf/libvirt,taget/libvirt,taget/libvirt,elmarco/libvirt,jardasgit/libvirt,rlaager/libvirt,eskultety/libvirt,cbosdo/libvirt,novel/fbsd-libvirt,trainstack/libvirt,jeckersb/libvirt,jardasgit/libvirt,shugaoye/libvirt,emaste/libvirt,novel/fbsd-libvirt,cbosdo/libvirt,jardasgit/libvirt,trainstack/libvirt,elmarco/libvirt,shugaoye/libvirt,eskultety/libvirt,zhlcindy/libvirt-1.1.4-maintain,warewolf/libvirt,olafhering/libvirt,eskultety/libvirt,jfehlig/libvirt,agx/libvirt,VenkatDatta/libvirt,libvirt/libvirt,fabianfreyer/libvirt,zhlcindy/libvirt-1.1.4-maintain,rlaager/libvirt,emaste/libvirt,jeckersb/libvirt,taget/libvirt,shugaoye/libvirt,crobinso/libvirt,andreabolognani/libvirt,elmarco/libvirt,trainstack/libvirt,bjzhang/libvirt,datto/libvirt,eskultety/libvirt,trainstack/libvirt,eskultety/libvirt,agx/libvirt,zippy2/libvirt,agx/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,andreabolognani/libvirt,novel/fbsd-libvirt,datto/libvirt,emaste/libvirt,siboulet/libvirt-openvz,nertpinx/libvirt,jfehlig/libvirt,iam-TJ/libvirt,zhlcindy/libvirt-1.1.4-maintain,libvirt/libvirt,zippy2/libvirt,nertpinx/libvirt,iam-TJ/libvirt,zippy2/libvirt,cbosdo/libvirt,siboulet/libvirt-openvz,zhlcindy/libvirt-1.1.4-maintain,jeckersb/libvirt,trainstack/libvirt,iam-TJ/libvirt,trainstack/libvirt,emaste/libvirt,emaste/libvirt,libvirt/libvirt,novel/fbsd-libvirt,nertpinx/libvirt,siboulet/libvirt-openvz,datto/libvirt,datto/libvirt,iam-TJ/libvirt,rlaager/libvirt,jfehlig/libvirt,bjzhang/libvirt,rlaager/libvirt,fabianfreyer/libvirt,novel/fbsd-libvirt,taget/libvirt,zippy2/libvirt,jfehlig/libvirt,taget/libvirt,jardasgit/libvirt,novel/fbsd-libvirt,fabianfreyer/libvirt,bjzhang/libvirt,olafhering/libvirt,libvirt/libvirt,nertpinx/libvirt,jeckersb/libvirt,jeckersb/libvirt,datto/libvirt,warewolf/libvirt,iam-TJ/libvirt,crobinso/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,warewolf/libvirt,elmarco/libvirt,novel/fbsd-libvirt,shugaoye/libvirt,iam-TJ/libvirt,VenkatDatta/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,siboulet/libvirt-openvz,jeckersb/libvirt,cbosdo/libvirt,emaste/libvirt,VenkatDatta/libvirt,jeckersb/libvirt,elmarco/libvirt,warewolf/libvirt,crobinso/libvirt,olafhering/libvirt,zhlcindy/libvirt-1.1.4-maintain,nertpinx/libvirt,iam-TJ/libvirt,fabianfreyer/libvirt