When starting docker daemons for swarm testing, we disable iptables
and use lo for communication (in order to avoid network conflicts).
The problem is, these options are lost on restart, that can lead
to any sorts of network conflicts and thus connectivity issues
between swarm nodes.
Fix this. This does not fix issues with swarm test failures, but
it seems they appear are less often after this one.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Porting helpers from `integration-cli/daemon.Daemon` to this struct
and use the API instead of the cli.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
