[jdk21u-dev] RFR: 8335710: serviceability/dcmd/vm/SystemDumpMapTest.java and SystemMapTest.java fail on Linux Alpine after 8322475

[Andreas Steiner]

Backport of c703d290425f85a06e61d72c9672ac2adac92db9

Reviewed-by: stuefe, lucy
(cherry picked from commit c703d290425f85a06e61d72c9672ac2adac92db9)

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Depends on: https://git.openjdk.org/jdk21u-dev/pull/1619

Commit messages:
 - 8335710: serviceability/dcmd/vm/SystemDumpMapTest.java and SystemMapTest.java fail on Linux Alpine after 8322475

Changes: https://git.openjdk.org/jdk21u-dev/pull/1620/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1620&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8335710
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1620.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1620/head:pull/1620

PR: https://git.openjdk.org/jdk21u-dev/pull/1620