[11] Pick up jdk-11.0.9+3 to sh/jdk11

[Roman Kennke]

Ok!

Thanks,
Roman

On Wed, 2020-08-12 at 09:37 +0200, Aleksey Shipilev wrote:
> 	Error verifying signature: Cannot verify message signature:
> Incorrect message format
> Upstream had published jdk-11.0.9+3.
> 
> The merge is trivial. I will tag the result shenandoah-jdk-11.0.9+3
> immediately.
> 
> Testing: hotspot_gc_shenandoah {fastdebug,release}
>