RFR: 8249831: Test sun/security/mscapi/nonUniqueAliases/NonUniqueAliases.java is marked with @ignore

[Hai-May Chao]

On Wed, 2 Oct 2024 13:24:00 GMT, Fernando Guallini <fguallini at openjdk.org> wrote:

> The test: **sun/security/mscapi/nonUniqueAliases/NonUniqueAliases.java** relies on the `certutil.exe` tool to import and delete certificates from a keystore. It was annotated with `@ignore` due to the uncertainty of `certutil.exe` being available on the instance where the test is executed.
> 
> Rather than ignoring the test entirely, this PR updates the logic to throw a `SkippedException` if the tool is not found, ensuring the test runs when possible, and gracefully skipped otherwise.

Nit: copyright update

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PR Comment: https://git.openjdk.org/jdk/pull/21305#issuecomment-2638206069