Unbreak 'enter' when SELinux is disabled#360
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/sys/fs/selinux is only present when SELinux is 'enforcing' or 'permissive'. When it's disabled, /sys/fs/selinux doesn't exist and sysfs doesn't let you create it either. Therefore, the attempt to wipe out the toolbox container's /sys/fs/selinux by bind mounting /usr/share/empty over it fails, and in turn prevents the container from starting up. Fallout from f9cca57 containers#344
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/sys/fs/selinux is only present when SELinux is 'enforcing' or
'permissive'. When it's disabled, /sys/fs/selinux doesn't exist and
sysfs doesn't let you create it either. Therefore, the attempt to wipe
out the toolbox container's /sys/fs/selinux by bind mounting
/usr/share/empty over it fails, and in turn prevents the container from
starting up.
Fallout from f9cca57
#344