RFR: JDK-8235252: Repair run_tests.sh by locating jtreg locally

[Jonathan Gibbons]

This seems ... surprising.

Why is the instance of jtreg used for all the other tests not good 
enough here?

-- Jon

On 12/10/19 1:35 PM, Alexander Matveev wrote:
> Please review simple script fix [2] for jpackage bug [1].
>
>  - Modified script to download jtreg bundle from URL provided by 
> environment variable JTREG_BUNDLE_URL.
>
> Thanks,
> Alexander
>
> [1] https://bugs.openjdk.java.net/browse/JDK-8235252
>
> [2] http://cr.openjdk.java.net/~almatvee/8235252/webrev.00/