JDK 9 RFR of JDK-8180452: Mark ClipCloseLoss.java as failing intermittently

[Joseph D. Darcy]

Hello,

The test
javax/sound/sampled/Clip/ClipCloseLoss.java

has been seen to fail intermittently (JDK-8178403) and should be marked 
accordingly.

Please review the patch below which does this.

Thanks,

-Joe

diff -r ef9954f6896b test/javax/sound/sampled/Clip/ClipCloseLoss.java
--- a/test/javax/sound/sampled/Clip/ClipCloseLoss.java    Tue May 16 
09:42:38 2017 -0400
+++ b/test/javax/sound/sampled/Clip/ClipCloseLoss.java    Tue May 16 
16:15:06 2017 -0700
@@ -36,6 +36,7 @@
  * @bug 4946913
  * @summary DirectClip doesn't kill the thread correctly, sometimes
  * @run main/othervm ClipCloseLoss
+ * @key intermittent
  */
 public class ClipCloseLoss {
     static int frameCount = 441000; // lets say 10 seconds