expose settings builder in the node builder API

modules/elasticsearch/src/main/java/org/elasticsearch/node/NodeBuilder.java

@@ -68,6 +68,20 @@ public class NodeBuilder {
         return new NodeBuilder();
     }
 
+    /**
+     * Set addition settings simply by working directly against the settings builder.
+     */
+    public ImmutableSettings.Builder settings() {
+        return settings;
+    }
+
+    /**
+     * Set addition settings simply by working directly against the settings builder.
+     */
+    public ImmutableSettings.Builder getSettings() {
+        return settings;
+    }
+
     /**
      * Explicit node settings to set.
      */

plugins/client/groovy/src/main/groovy/org/elasticsearch/groovy/node/GNodeBuilder.groovy

@@ -41,6 +41,10 @@ public class GNodeBuilder {
         new GNodeBuilder()
     }
 
+    public ImmutableSettings.Builder getSettings() {
+        return settingsBuilder;
+    }
+
     def settings(Settings.Builder settings) {
         settingsBuilder.put(settings.build())
     }