[jdk11u-dev] RFR: 8316973: GC: Make TestDisableDefaultGC use createTestJvm

[Andrew Lu]

I backport this for parity with 11.0.25-oracle.

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Commit messages:
 - Backport 5f4be8cea980b3c2e8e5fb2067dc64b62fa0245c

Changes: https://git.openjdk.org/jdk11u-dev/pull/2904/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2904&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316973
  Stats: 8 lines in 1 file changed: 0 ins; 0 del; 8 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2904.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2904/head:pull/2904

PR: https://git.openjdk.org/jdk11u-dev/pull/2904