[Bug 1100000] can't run iscsid in a docker container

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1100000

--- Comment #12 from Chris Leech  ---
It looks like the iSCSI netlink control interface isn't namespace aware, and
the kernel side of the iSCSI initiator rejects messages that don't come from
the default network namespace.  I suppose it might make sense to track active
sessions per netns.