* Update ansible-test collection inventory handling.
- The `windows-integration` command now supports the `--inventory` option.
- The incomplete support for host_vars and group_vars directories has been removed.
- The incomplete support for an inventory directory has been removed.
- The inventory specified by `--inventory` can now reside outside the install and content roots.
- Using `ansible_ssh_private_key_file` with `--docker` or `--remote` results in a warning about the combination being unsupported and likely to fail.
* Fix config handling.
* Fix payload handling of ssh keys.
* Disable pylint no-self-use rule for ansible-test.
* De-duplicate payload paths.
The `test/integration/integration_config.yml` vars file will now be loaded from the content under test and is now optional.
The `output_dir` and `win_output_dir` vars are now provided by ansible-test.
* Move Ansible test config into env vars.
This allows ansible-test to use an empty Ansible config file, leaving open the option for users to customize the one used to run tests (although such usage is discouraged).
* Use config from content under test when present.
* Cache ansible version lookup.
* Fix method of determining ANSIBLE_ROOT.
* Clean up based on PyCharm inspections.
* Generate minimal PKG-INFO without setup.py.
* Use ANSIBLE_LIB_ROOT where possible.
* Use import instead of subprocess to get version.
* Fix install layout type.
* Correct required paths message for installs.
* Update list of files copied during delegation.
* Fix ansible-test entry point.
* Fix pylint issue.
* Fix version lookup on Python 2.x.
* Fix pylint issue.
* Remove unwanted print statement.
