added capabilities needed by new sysinit

Docker-DCO-1.1-Signed-off-by: Fernando Mayo <fernando@tutum.co> (github: fermayo)
Add remount for bind mounts in ro

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Merge pull request #3594 from crosbymichael/add-bind-remount

Add remount for bind mounts in ro
Merge pull request #3508 from tutumcloud/seccomp

Add capabilities needed by new sysinit to mkseccomp.pl sample list