[jdk25u] RFR: 8369853: jpackage signing tests fail after JDK-8358723

[Alexey Semenyuk]

8369853: jpackage signing tests fail after JDK-8358723

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

Commit messages:
 - Backport 95def24b025341b5a6b99abdd4d1f3d26a40431c

Changes: https://git.openjdk.org/jdk25u/pull/309/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=309&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8369853
  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk25u/pull/309.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/309/head:pull/309

PR: https://git.openjdk.org/jdk25u/pull/309