8274216: ProblemList 2 serviceability/dcmd/gc tests with ZGC on linux-all and windows-all

Reviewed-by: darcy, tschatzl

Author: Daniel D. Daugherty

test/hotspot/jtreg/ProblemList-zgc.txt

@@ -44,3 +44,6 @@ serviceability/sa/TestJmapCoreMetaspace.java                  8268722,8268636
 serviceability/sa/TestJhsdbJstackMixed.java                   8248912   generic-all
 serviceability/sa/ClhsdbPstack.java#process                   8248912   generic-all
 serviceability/sa/ClhsdbPstack.java#core                      8248912   generic-all
+
+serviceability/dcmd/gc/HeapDumpAllTest.java                   8274196   linux-all,windows-all
+serviceability/dcmd/gc/HeapDumpTest.java                      8274196   linux-all,windows-all