[COOK-3824] - Fixing up list construction in main.cf.erb

Signed-off-by: Sean OMeara <someara@opscode.com>

templates/default/main.cf.erb

@@ -5,14 +5,7 @@
 
 <% @settings.sort.map do |key, value| -%>
 <%  if value.kind_of? Array -%>
-<%=   "#{key} = " -%>
+<%=   "#{key} = #{value.join(', ')}"%>
-<%    value.each do |item| -%>
-<%      if value.last == item -%>
-<%=       item %>
-<%      else -%>
-<%=       "#{item}, " -%>
-<%      end -%>
-<%    end -%>
 <%  else -%>
 <%=   "#{key} = #{value}"%>
 <%  end -%>