add lt(Object) to range filter builder

modules/elasticsearch/src/main/java/org/elasticsearch/index/query/xcontent/RangeFilterBuilder.java

@@ -313,6 +313,15 @@ public class RangeFilterBuilder extends BaseFilterBuilder {
         return this;
     }
 
+    /**
+     * The to part of the filter query. Null indicates unbounded.
+     */
+    public RangeFilterBuilder lte(Object to) {
+        this.to = to;
+        this.includeUpper = true;
+        return this;
+    }
+
     /**
      * Should the lower bound be included or not. Defaults to <tt>true</tt>.
      */