Removed ve-unlimited.conf-sample

This file was added in a pre-VSwap era, and doesn't make much sense for
VSwap. Also, it was not working with ploop because of DISKQUOTA absense.

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
etc/vz.conf: use ploop by default

Assuming all new installations are using RHEL6 kernel, and
ploop is pretty mature already, it makes sense to have it as default.

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Use vswap config by default

1. Modify /etc/vz.conf to have vswap-256m config by default.

2. Remove the logic of tuning default config from init.d/vz scripts.

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
etc/vz.conf: merge IP6TABLES to IPTABLES_MODULES

Looks simpler this way, and IPv6 is pretty much everywhere nowdays.

Signed-off-by: Kir Kolyshkin <kir@openvz.org>