RFR: 8210237: gc/stress/TestStressIHOPMultiThread.java fails with 'Unexpected exit from test [exit code: 1]' in CDS mode

[Jiangli Zhou]

Please help review the fix for test TestStressIHOPMultiThread.java. This 
test has the similar issue as the one fixed earlier this week for 
JDK-8210193. Please see the bug report for detailed analysis.

   webrev: http://cr.openjdk.java.net/~jiangli/8210237/webrev.00/

   bug: https://bugs.openjdk.java.net/browse/JDK-8210237

Tested with tier1 - tier3. Also tested with tier6 and tier7 with the 
default CDS archive patch.

Thanks,

Jiangli