RFR: 8368616: runtime/cds/appcds/aotCache/JavaAgent.java#dynamic fails on non CDS platforms/builds after JDK-8362561

[Arno Zeller]

The new subtest runtime/cds/appcds/aotCache/JavaAgent.java#dynamic fails after [JDK-8362561](https://bugs.openjdk.org/browse/JDK-8362561) on platforms without CDS or in builds without CDS.
The new subtest test misses the @requires that exists in the other subtests.

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Commit messages:
 - Add @requires

Changes: https://git.openjdk.org/jdk/pull/27484/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27484&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8368616
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27484.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27484/head:pull/27484

PR: https://git.openjdk.org/jdk/pull/27484