Update field removal based on HTTP input changes

salt/logstash/pipelines/config/so/9900_output_endgame.conf.jinja

@@ -8,7 +8,7 @@
 filter {
   if [event][module] =~ "endgame" {
     mutate {
-      remove_field => ["headers", "host"]
+      remove_field => ["client_headers", "client_host"]
     }
   }
 }