vzcfgvalidate: add support for vswap configs

For vswap config, these checks are performed:
1. only check physpages and swappages
2. barrier should be zero for both
3. physpages.limit should not exceed host RAM
4. swappages.limit should not exceed host swap

Everything else we just ignore.

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