increase retry to have better chance for streaming

Change-Id: I1fbd0b4f7d916ab7eebf5ce07c1ff8df21a518b7
diff --git a/tests/tests/media/src/android/media/cts/MediaPlayerTestBase.java b/tests/tests/media/src/android/media/cts/MediaPlayerTestBase.java
index 6b6f3d7..59a50d5 100644
--- a/tests/tests/media/src/android/media/cts/MediaPlayerTestBase.java
+++ b/tests/tests/media/src/android/media/cts/MediaPlayerTestBase.java
@@ -32,7 +32,7 @@
 
     protected static final int SLEEP_TIME = 1000;
     protected static final int LONG_SLEEP_TIME = 6000;
-    protected static final int STREAM_RETRIES = 5;
+    protected static final int STREAM_RETRIES = 20;
 
     public static class Monitor {
         private boolean signalled;
@@ -188,6 +188,7 @@
         } else {
             Thread.sleep(playTime);
         }
+        mMediaPlayer.stop();
     }
 
     private static class PrepareFailedException extends Exception {}