RFR: JDK-8230067: Add optional automatic retry when running jtreg tests

[Erik Joelsson]

There seems to be a bug in the new jtreg version, so need to hold off on 
this.

/Erik

On 2019-08-22 14:22, Erik Joelsson wrote:
> For some notoriously unstable client tests, we need the ability to 
> automatically retry them a few times. This can be achieved with a 
> simple loop around running jtreg from RunTest.gmk and by using the 
> -status:error,fail parameter on the retry runs. This parameter was 
> fixed to actually work in this way in jtreg 4.2 b15.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8230067
>
> Webrev: http://cr.openjdk.java.net/~erikj/8230067/webrev.01/index.html
>
> /Erik
>