RFR: 8334549: [Sound] Test timed out: javax/sound/sampled/Clip/OpenNonIntegralNumberOfSampleframes.java

[Phil Race]

This sound test appears to need the sound key which is needed so that it can be filtered (in or out) depending on whether sound resources / devices are available in a test environment.

This sound test passes (as tested many times) when run in such an environment, so I here add the key.

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Commit messages:
 - 8334549

Changes: https://git.openjdk.org/jdk/pull/28752/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28752&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8334549
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/28752.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28752/head:pull/28752

PR: https://git.openjdk.org/jdk/pull/28752