[jdk17u-dev] RFR: 8268906: gc/g1/mixedgc/TestOldGenCollectionUsage.java assumes that GCs take 1ms minimum

[Goetz Lindenmaier]

I backport this for parity with 17.0.4-oracle.

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Commit messages:
 - Backport a0f32cb1406e4957e84befd9b68444adb662bd13

Changes: https://git.openjdk.java.net/jdk17u-dev/pull/212/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u-dev&pr=212&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8268906
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk17u-dev/pull/212.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u-dev pull/212/head:pull/212

PR: https://git.openjdk.java.net/jdk17u-dev/pull/212