RFR: JDK-8215895: Verify and create tests for Mac installer specific signing options

[Alexander Matveev]

http://cr.openjdk.java.net/~almatvee/8215895/webrev.01/

Changes since webrev.00 as per Alexey suggestions:
- Reverted "@library /test/lib" jtreg directive when it is not needed.
- jtreg.SkippedException exceptions will be used through reflection.
- Other minor tweaks.

Thanks,
Alexander

On 10/2/2019 2:34 PM, Alexander Matveev wrote:
> Please review the jpackage fix for bug [1] at [2].
>
> This is a fix for the JDK-8200758-branch branch of the open sandbox 
> repository (jpackage).
>
> - Added two signing tests for macOS. One test checks signing app image 
> and second checks pkg and dmg.
> - These test will not be run if machine is not configured with 
> required signing certificates and will throw jtreg.SkippedException.
> - Increase timeouts for two tests which where failing due to timeout 
> intermittently.
>
> [1] https://bugs.openjdk.java.net/browse/JDK-8215895
>
> [2] http://cr.openjdk.java.net/~almatvee/8215895/webrev.00/
>
> Thanks,
> Alexander