add ranges to template and update Readme

manifests/params.pp

@@ -36,6 +36,9 @@
 # @param [Array] ae_internal_proxy the IP addresses of the internal proxies, 
 #   i.e. the internal load balancers. This is required when `ae_use_lb` is set to 
 #   true, and defaults to ['127.0.0.1'].
+# @param [String] ae_remoteip_header the header to use for the remote ip,
+#   typically `X-Forwarded-For`. This is required when `ae_use_lb` is set 
+#   to true, and defaults to `X-Forwarded-For`.
 ###########################################################################
 class confdroid_apache::params (
 
@@ -63,6 +66,7 @@ class confdroid_apache::params (
   Boolean $ae_use_lb          = false,
   Array $ae_trusted_proxy     = ['127.0.0.1','10.0.1.0/24'],
   Array $ae_internal_proxy    = ['127.0.0.1','10.0.1.0/24'],
+  String $ae_remoteip_header   = 'X-Forwarded-For',
 
 ) {
 # facts