* 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)
* Undeprecate ec2_elb_*
* Make ec2_elb* full fledged modules rather than aliases
* Split tests for ec2_elb_lb and elb_classicb_lb
* Change names in documentation of old and new elb modules
Add tests for ec2_elb_lb