* [stable-2.12] ansible-test - Fix Python real prefix detection.
(cherry picked from commit b4cbe1adcf)
* ansible-test - Remove duplicate code.
(cherry picked from commit b9694ce4fb)
* Overhaul ansible-test integration tests. (#76111)
* Overhaul ansible-test integration tests.
* ansible-test - Fix import test pyyaml usage.
* ansible-test - Remove unused import.
* ansible-test - Fix traceback when pip is unavailable.
* ansible-test - Fix typo in port forwarding message.
* ansible-test - Fix controller logic in requirements install.
* Fix unit tests in ansible-test integration test.
Unit tests are now run for available Python versions which
provide `virtualenv` (Python 2.x) or `venv` (Python 3.x).
(cherry picked from commit cae7d2a671)
* ansible-test - Fix import test on old Pythons. (#76137)
(cherry picked from commit cd64e0b070)
* Skip ansible-test tests on Python 2.6.
6cba4c11d4