stub-zone:
  name: "<%= @name %>"
<% if @address.is_a? Array -%>
<% @address.each do |addr| -%>
  stub-addr: <%= addr %>
<% end -%>
<% elsif @address != '' -%>
  stub-addr: <%= @address -%>
<% end -%>

stub-zone:
  name: "<%= @name %>"
<% Array(@address).each do |addr| -%>
  stub-addr: <%= addr %>
<% end -%>

Clean up some newline issues
Clean up some newline issues

Not having the newline was preventing my unbound server from reading the
configuration correctly.  This ammends the previos epic PR to include
newlines.  While I was at it, I devided to squash the logic to avoid
checking for an array.
