RFR(XS): 8240691: serviceability/sa/ClhsdbCDSJstackPrintAll.java and serviceability/sa/ClhsdbCDSCore.java should be excluded with ZGC

[Yumin Qi]

HI,

   Can I have your reviews on

   Bug: https://bugs.openjdk.java.net/browse/JDK-8240691

   webrev: http://cr.openjdk.java.net/~minqi/8240691/webrev/

   Summary: With JDK-8232069 
(https://bugs.openjdk.java.net/browse/JDK-8232069), CDS works with 
UseCompressedOop and UseCompressedClassPointers off. The code for 
detecting CDS will report false with ZGC since ZGC turned off those two 
flags. The detection code will be changed in 
JDK-8240563(https://bugs.openjdk.java.net/browse/JDK-8240563), this will 
cause those two tests fail.


    Tests: jtreg to show the tests not selected with ZGC.

    Thanks

    Yumin