RFR: JDK-8230726: Improve jpackage jtreg tests

[Alexander Matveev]

Looks good.

On 9/9/2019 10:14 AM, Alexey Semenyuk 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).
>
> - reworked jpackage tests that produce platform specific packages to 
> get rid of code duplication;
> - replaced install.sh/uninstall.sh scripts on Linux and Windows with 
> shared manage_packages.sh script that will batch install/uninstall 
> packages. Support for dmg, pkg and exe installers TBD.
>
> [1] https://bugs.openjdk.java.net/browse/JDK-8230726
>
> [2] http://cr.openjdk.java.net/~asemenyuk/8230726/webrev.03
>
> Thanks,
> Alexey
>