Simplify module template logic

Author: blkperl

templates/module.erb

@@ -11,11 +11,23 @@ gid             = <%= @gid %>
 incoming chmod  = <%= @incoming_chmod %>
 outgoing chmod  = <%= @outgoing_chmod %>
 max connections = <%= @max_connections %>
-<% if Integer(@max_connections) > 0 %>lock file =     <%= @lock_file %><% end %>
-<% if @comment != :undef %>comment               = <%= @comment %><% end %>
-<% if @secrets_file != :undef %>secrets file = <%= @secrets_file %><% end %>
-<% if @auth_users != :undef %>auth users = <%= @auth_users.to_a.join(', ')%><% end %>
-<% if @hosts_allow != :undef %>hosts allow = <%= @hosts_allow.to_a.join(' ')%><% end %>
-<% if @hosts_deny != :undef %>hosts deny = <%= @hosts_deny.to_a.join(' ')%><% end %>
+<% if Integer(@max_connections) > 0 -%>
+lock file       = <%= @lock_file %>
+<% end -%>
+<% if @comment -%>
+comment         = <%= @comment %>
+<% end -%>
+<% if @secrets_file -%>
+secrets file    = <%= @secrets_file %>
+<% end -%>
+<% if @auth_users -%>
+auth users      = <%= @auth_users.to_a.join(', ')%>
+<% end %>
+<% if @hosts_allow -%>
+hosts allow     = <%= @hosts_allow.to_a.join(' ')%>
+<% end -%>
+<% if @hosts_deny -%>
+hosts deny      = <%= @hosts_deny.to_a.join(' ')%>
+<% end -%>