* Update Shippable integration test groups.
* Update integration test group aliases.
* Rebalance AWS and Azure tests with extra group.
* Rebalance Windows tests with another group.
* win_chocolatey_source: add new module to manage Chocolatey sources
* Added examples and fix diff run
* Minor fixes from review
* When editing a source, recreate with the explicit options instead of using the existing source
* Fixed up copyright header in PowerShell file