RFR: Shenandoah test groups should not include each other

[Aleksey Shipilev]

On 11/28/18 2:22 PM, Roman Kennke wrote:
> According to Leonid's review, tierN+1 should not include tierN. This
> also seems consistent with other tierX groups. So now, if you want to
> run all tests, you need to specify all 3 tierX_gc_shenandoah groups, or
> we decide to add a hotspot_gc_shenandoah_all group or such.
> 
> http://cr.openjdk.java.net/~rkennke/shenandoah-test-groups/webrev.00/

*) It seems to me we can inline "shenandoah_stress" group into "tier3_gc_shenandoah" then.

*) Let's add hotspot_gc_shenandoah group that includes tier{1,2,3}.

-Aleksey