* Move var_blending test inventory into test.
* Remove Amazon specific inventory entry for tests.
* Remove Azure specific inventory entry for tests.
* Move var_precedence test inventory into test.
* Move unicode test inventory into test.
* Remove unused inventory entry.
* Move gathering_facts test inventory into test.
* Move delegate_to test inventory into test.
* Clean up inventory for binary_modules test.
* Clean up integration test inventory.
* Fix type hint typos.
* Add one-time cloud env setup after delegation.
* Add generate_password to util.
* Add username/password support to HttpClient.
* Avoid pip requirement for ansible-test shell.
* Support provisioning Tower instances.
