better initial camera location in TerrainGridTileLoaderTest (see #2002)

jme3-examples/src/main/java/jme3test/terrain/TerrainGridTileLoaderTest.java

@@ -121,7 +121,7 @@ public class TerrainGridTileLoaderTest extends SimpleApplication {
         final BulletAppState bulletAppState = new BulletAppState();
         stateManager.attach(bulletAppState);
 
-        this.getCamera().setLocation(new Vector3f(0, 256, 0));
+        cam.setLocation(new Vector3f(257f, 256f, -514f));
         cam.setRotation(new Quaternion(-0.0075f, 0.949784f, -0.312f, -0.0227f));
 
         this.viewPort.setBackgroundColor(new ColorRGBA(0.7f, 0.8f, 1f, 1f));