* Testing: Add CentOS Linux On Power platform
* Add arch designation to remotes.
This avoids overloading the provider with the arch.
Also add a changelog entry.
Co-authored-by: Matt Clay <matt@mystile.com>
* Update Shippable integration test groups.
* Update integration test group aliases.
* Rebalance AWS and Azure tests with extra group.
* Rebalance Windows tests with another group.