setup correct per distro iface variable

Conflicts:
	.kitchen.yml
cleanup unused data bags for reals now
bind tests instance to eth0:1, lo:0 throws a segfault on centos

Conflicts:
	.kitchen.yml
Merge branch 'master' of github.com:spheromak/dhcp-cook
set ddns-domainname for each subnet

Conflicts:
	providers/subnet.rb
	resources/subnet.rb
	templates/default/subnet.conf.erb