Add dynamic preauthenticated config (#477)

* Update rundeck-config.erb

templates/rundeck-config.erb

@@ -92,13 +92,9 @@ rundeck.storage.converter."1".<%= k %> = "<%= v %>"
   <%- end -%>
 <%- end -%>
 
-rundeck.security.authorization.preauthenticated.enabled = "<%= @preauthenticated_config['enabled']%>"
-rundeck.security.authorization.preauthenticated.attributeName = "<%= @preauthenticated_config['attributeName']%>"
-rundeck.security.authorization.preauthenticated.delimiter = "<%= @preauthenticated_config['delimiter']%>"
-rundeck.security.authorization.preauthenticated.userNameHeader = "<%= @preauthenticated_config['userNameHeader']%>"
-rundeck.security.authorization.preauthenticated.userRolesHeader = "<%= @preauthenticated_config['userRolesHeader']%>"
-rundeck.security.authorization.preauthenticated.redirectLogout = "<%= @preauthenticated_config['redirectLogout']%>"
-rundeck.security.authorization.preauthenticated.redirectUrl = "<%= @preauthenticated_config['redirectUrl']%>"
+<%- @preauthenticated_config.each do |k,v| -%>
+rundeck.security.authorization.preauthenticated.<%= k %> = "<%= v %>"
+<%- end -%>
 
 <%- @gui_config.sort.each do |k,v| -%>
 <%= k %> = "<%= v %>"