RFR: 8334771: [TESTBUG] Run TestDockerMemoryMetrics.java with -Xcomp fails exitValue = 137

[SendaoYan]

Hi all,
  After [JDK-8294960](https://bugs.openjdk.org/browse/JDK-8294960), the footprint memory usage increased significantly when run the testcase with -Xcomp jvm options, then cause the testcase was killed by docker by OOM.
  Maybe the footprint memory usage increased was inevitable, so I think we should increase the smallest memory limite for this testcase.
  Only change the testcase, the change has been verified, no risk.

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Commit messages:
 - 8334771: [TESTBUG] Run TestDockerMemoryMetrics.java with -Xcomp fails exitValue = 137

Changes: https://git.openjdk.org/jdk/pull/19864/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19864&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8334771
  Stats: 5 lines in 2 files changed: 2 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/19864.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19864/head:pull/19864

PR: https://git.openjdk.org/jdk/pull/19864