[VOTE] Inclusion of GEODE-7531 into 1.11

[Udo Kohlmeyer]

Hi there Apache Devs.

I can we please vote on the inclusion of GEODE-7531. This issue is to 
fix an bug which assumes that all `Pool` objects are of type `PoolImpl` 
and immediately casts Pool -> PoolImpl.

In the case of testing with Mocks, the type casts fail, because the 
Pool-mocks are not of type PoolImpl. The simplest fix (for now) was to 
type check before the cast.


Regards

Udo