RFR: 8375364: Some jpackage signing tests fail after JDK-8375240 [v2]

[Alexey Semenyuk]

> Fix a regression from the JDK-8375240

Alexey Semenyuk has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  8375364: Some jpackage signing tests fail after JDK-8375240

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Changes:
  - all: https://git.openjdk.org/jdk/pull/29241/files
  - new: https://git.openjdk.org/jdk/pull/29241/files/7c02bb55..381bd016

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29241&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29241&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/29241.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29241/head:pull/29241

PR: https://git.openjdk.org/jdk/pull/29241