* 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)
* Use separate variables for stdin and stdout file descriptors
* Do not set stdout to raw mode when output is not a TTY
(cherry picked from commit 1d1595b990)