Fixed the issue where openrc in gentoo does not source the configuration file /etc/conf.d/nova-agent due to it being a sym link.
https://bugs.gentoo.org/show_bug.cgi?id=350910
Merge pull request #58 from leader716/master

Fixed the issue where openrc in gentoo does not source the configuration...
Put nameserver info on all subinterfaces of a vif

At the moment nova-agent only puts the nameserver info on one of the
subinterfaces of a vif seemingly picked at random. Alot of times
this ends up being the ipv6 configuration section, which causes
the nameserver information to not be loaded when IPv6 is disabled
on the virtual machine. This commit puts the nameserver information
on all of the subinterfaces to prevent this issue from occurring.