etc/dists/scripts/set_dns.sh: support for resolvconf in CT

In some distros (namely Debian/Ubuntu and Gentoo/Funtoo) people are
sometimes using resovconf package that takes care of handling the
contents of /etc/resolv.conf.

Detect resolvconf and use it if found.

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