Update libcontainer to 84c1636580a356db88b079d118b

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Revert "Support hairpin NAT"

This reverts commit 95a400e6e1a3b5da68431e64f9902a3fac218360.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Merge pull request #9269 from crosbymichael/update-libcontainer-nov20

Update libcontainer to 84c1636580a356db88b079d118b94abe6a1a0acd