Support new Java GC algorithms (Shenandoah and ZGC) in JvmMonitor

[leventov]

In this code:
https://github.com/apache/incubator-druid/blob/431d3d8497f9079857c3baa7ae7ab4cb44a22355/java-util/src/main/java/org/apache/druid/java/util/metrics/JvmMonitor.java#L253-L271

[stale]

This issue has been marked as stale due to 280 days of inactivity. It will be closed in 2 weeks if no further activity occurs. If this issue is still relevant, please simply write any comment. Even if closed, you can still revive the issue at any time or discuss it on the dev@druid.apache.org list. Thank you for your contributions.

[clintropolis]

i believe this is still relevant

[stale]

This issue is no longer marked as stale.