hg: jdk/sandbox: 8242165: SA sysprops support fails to dump all system properties

[chris.hegarty at oracle.com]

Changeset: 0337d3f76718
Author:    cjplummer
Date:      2020-04-07 18:32 -0700
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/0337d3f76718

8242165: SA sysprops support fails to dump all system properties
Reviewed-by: sspitsyn, ysuenaga

! src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/utilities/ObjectReader.java
! test/hotspot/jtreg/ProblemList-zgc.txt
+ test/hotspot/jtreg/serviceability/sa/LingeredAppSysProps.java
+ test/hotspot/jtreg/serviceability/sa/TestSysProps.java