* Update Shippable integration test groups.
* Update integration test group aliases.
* Rebalance AWS and Azure tests with extra group.
* Rebalance Windows tests with another group.
(cherry picked from commit 4e489d1be8)
* cloudstack: rename cs_serviceoffer to cs_service_offering
* adjust references to old name
* cs_service_offering: fix limitcpuuse not handled
* minor docs fix
* update changelog