Delay so filesystem records newer file time.

Author: sdedic

java/gradle.java/test/unit/src/org/netbeans/modules/gradle/java/queries/GradleJarArtifactTest.java

@@ -268,6 +268,7 @@ public void testGradleBuildchanged() throws Exception {
 
         NbGradleProject project = NbGradleProject.get(p);
         File buildscript = project.getGradleFiles().getBuildScript();
+        Thread.sleep(2000);
         Files.write(buildscript.toPath(), 
                 Arrays.asList(
                     "",