RFR: 8258483: [TESTBUG] gtest CollectorPolicy.young_scaled_initial_ergo_vm fails if heap is too small

[Leonid Mesnik]

The tests CollectorPolicy.* checks SerialGC policy. They might fail if MaxHeapSize is too small.

If heap is not enough for then VM change ergonomic scheme and print warning about this. The test is not checking this case.
The GC ergonomic has very different cases and only main workflow is covered. The goal of fix is not to improve test but pass in reasonable environment or silently pass if other.

I have updated test so it pass if heap is at least 128M (since it is SerialGC, it seems reasonable for testing in smaller containers) or skipped otherwise. 

Testing: tier1

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Commit messages:
 - typo fixed.
 - size updated.
 - gtest has been updated.

Changes: https://git.openjdk.org/jdk/pull/20656/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20656&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8258483
  Stats: 12 lines in 1 file changed: 9 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/20656.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20656/head:pull/20656

PR: https://git.openjdk.org/jdk/pull/20656