[CRIU] [PATCH 0/7] p.haul: Make .dump be htype method

[Pavel Emelyanov]

As discussed previously, two actions -- dump and restore -- are impossible to
do without the good help from the actual driver (htype). This is already done
for .restore -- the restore method is done via htype, for openvz it calls
vzctl restore, for lxc it will likely call lxc checkpoint -r, for docker it
will call docker restore. Let's do the same for dump -- call htype to make it
put proper arguments and re-call criu.

-- Pavel