dns: use cookstyle auto correct format
dns: use cookstyle auto correct format

tomhughes/openstreetmap-chef,openstreetmap/chef,tomhughes/openstreetmap-chef,openstreetmap/chef,tomhughes/openstreetmap-chef,openstreetmap/chef,openstreetmap/chef,openstreetmap/chef,openstreetmap/chef,tomhughes/openstreetmap-chef,openstreetmap/chef,tomhughes/openstreetmap-chef,tomhughes/openstreetmap-chef,tomhughes/openstreetmap-chef,tomhughes/openstreetmap-chef,openstreetmap/chef