RFR: 8366476: Test gc/z/TestSmallHeap.java fails OOM with many NUMA nodes [v2]

[SendaoYan]

> Hi all,
> 
>   The PR [JDK-8359683](https://bugs.openjdk.org/browse/JDK-8359683) added NUMA-Aware Relocation for ZGC, it's optimized for the majority of NUMA workloads, but the cost is requiring more headroom in terms of heap memory. This PR add extra JVM option "-XX:-UseNUMA" to make this test run normally.
> 
> Test-fix only, change has been verified locally, no risk.

SendaoYan has updated the pull request incrementally with one additional commit since the last revision:

  update comment "Disable NUMA to avoid potential OOM after JDK-8359683"

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/27019/files
  - new: https://git.openjdk.org/jdk/pull/27019/files/79333670..0be01611

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27019&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27019&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/27019.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27019/head:pull/27019

PR: https://git.openjdk.org/jdk/pull/27019