RFR 8188922: runtime/CommandLine/VMDeprecatedOptions.java fails with JDK10 release bits

[harold seigel]

Hi,

Please review this small change to fix JDK-8188922.  The fix adds 
-XX:+UnlockDiagnosticVMOptions to the command line when testing a 
deprecated diagnostic option.

Open webrev: 
http://cr.openjdk.java.net/~hseigel/bug_8188922/webrev/index.html

JBD Bug: https://bugs.openjdk.java.net/browse/JDK-8188922

The fix was tested by running the modified VMDeprecatedOptions.java test 
with both a product JDK-10 build and a fastdebug JDK-10 build.

Thanks, Harold