[jdk11u-dev] RFR: 8301167: Update VerifySignedJar to actually exercise and test verification

[Paul Hohensee]

On Sun, 15 Oct 2023 21:55:18 GMT, Amos <duke at openjdk.org> wrote:

> - Backport [JDK-8301167](https://bugs.openjdk.org/browse/JDK-8301167)
>   - Test succeeded in local dev box (MacOS M1)
> - The patch applies clean, but the new code must be changed to Java 11 syntax
>   - The commit [a56255f211ee8dd378ce40406491cffe799416bc](https://github.com/openjdk/jdk11u-dev/pull/2185/commits/a56255f211ee8dd378ce40406491cffe799416bc) is changing the code to Java 11 syntax

Marked as reviewed by phh (Reviewer).

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PR Review: https://git.openjdk.org/jdk11u-dev/pull/2185#pullrequestreview-1688630417