8386273: Some javax/sound/sampled tests fail on systems with high CPU core number and running with high concurrency

Reviewed-by: azvegint, serb, kizune

Author: prrace

test/jdk/TEST.ROOT

@@ -59,7 +59,7 @@ exclusiveAccess.dirs=java/math/BigInteger/largeMemory \
 java/rmi/Naming java/util/prefs sun/management/jmxremote \
 sun/tools/jstatd sun/security/mscapi java/util/Arrays/largeMemory \
 java/util/BitSet/stream javax/rmi java/net/httpclient/websocket \
-com/sun/net/httpserver/simpleserver sun/tools/jhsdb
+com/sun/net/httpserver/simpleserver sun/tools/jhsdb javax/sound
 
 # Group definitions
 groups=TEST.groups