* Fix var_blending test temp dir usage.
* Fix filters integration test:
- Fix use of `output_dir`.
- Use `localhost` instead of `testhost` since we're only testing filters.
- Fix `fileglob` test to actually test a directory that exists.
* Fix lookups integration test:
- Fix use of `output_dir`.
- Use `localhost` instead of `testhost` since we're only testing lookups.
* Fix ansible-runner test temp dir usage.
* Fix template and template_jinja2_latest test.
Use the `OUTPUT_DIR` env var to get the output directory for the tests.
* Fix Python version compat in filters test.
* Skip filters test on Python 2.6.
