* Divide Windows integration tests into 2 groups.
* Support `none` for `--changed-all-target`.
* Run 2 separate Windows groups on Shippable.
* Only run smoketest and minimal for the group1 job.
* Check registry to find RabbitMQ installation path
* Integration tests for win_rabbitmq_plugin
* Added himself to BOTMETA.yml
* Skipped running tests on Windows 2008 SP2