RFR(T): 8250742: ProblemList serviceability/sa/ClhsdbPstack.java #id0 and #id1 for ZGC

[Chris Plummer]

Hello,

Please review the following.

diff --git a/test/hotspot/jtreg/ProblemList-zgc.txt 
b/test/hotspot/jtreg/ProblemList-zgc.txt
--- a/test/hotspot/jtreg/ProblemList-zgc.txt
+++ b/test/hotspot/jtreg/ProblemList-zgc.txt
@@ -44,7 +44,8 @@
  serviceability/sa/ClhsdbJstackXcompStress.java 8220624   generic-all
  serviceability/sa/ClhsdbPrintAs.java 8220624   generic-all
  serviceability/sa/ClhsdbPrintStatics.java 8220624   generic-all
-serviceability/sa/ClhsdbPstack.java 8220624   generic-all
+serviceability/sa/ClhsdbPstack.java#id0 8220624   generic-all
+serviceability/sa/ClhsdbPstack.java#id1 8220624   generic-all
  serviceability/sa/ClhsdbSource.java 8220624   generic-all
  serviceability/sa/ClhsdbThread.java 8220624   generic-all
  serviceability/sa/ClhsdbWhere.java 8220624   generic-all

ClhsdbPstack.java was already problem listed, but I added a new subtest, 
so now instead we have to problem list #id0 and #id1. Currently testing. 
I'll push once I get validation that the tests have been properly 
problem listed.

thanks,

Chris