[jdk11u-dev] RFR: 8231489: GC watermark_0_1 failed due to "metaspace.gc.Fault: GC has happened too rare"

[Goetz Lindenmaier]

I backport this for parity with 11.0.16-oracle.

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Commit messages:
 - Backport 9e17946ab21434df0f6780423f7998166265af2a

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/904/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=904&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8231489
  Stats: 33 lines in 6 files changed: 21 ins; 7 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/904.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/904/head:pull/904

PR: https://git.openjdk.java.net/jdk11u-dev/pull/904