[jdk21u-dev] RFR: 8314283: Support for NSS tests on aarch64 platforms

[Goetz Lindenmaier]

I backport this for parity with 21.0.3-oracle.

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Commit messages:
 - Backport 2a8016096000de5836251f2ca9bc8ad6479e6942

Changes: https://git.openjdk.org/jdk21u-dev/pull/187/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=187&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314283
  Stats: 41 lines in 2 files changed: 24 ins; 3 del; 14 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/187.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/187/head:pull/187

PR: https://git.openjdk.org/jdk21u-dev/pull/187