[8] RFC: Pick up 8u232-ga to sh/jdk8

[Roman Kennke]

Yes, please!

Thanks,
Roman


> aarch64-port/jdk8u-shenandoah integration repo now has current CPU (8u232-ga).
> 
> Let's pick it up to sh/jdk8. Since we did not have any changes in sh/jdk8 after the CPU freeze, no
> merge is required, we only pick up changesets. There is no reason to list the changes here, refer to
> integration repo RFR for details:
>   https://mail.openjdk.java.net/pipermail/aarch64-port-dev/2019-October/008085.html
> 
> Testing: x86_64 hotspot_gc_shenandoah {fastdebug, release}
>