* Add new Fedora docker images with Python 3.
* Use consistent env var for lookup test.
* Fix testing of virtualenv with Python 3.
* Fix docker_secret tests on Fedora 26.
* Add Python 3 support to Fedora postgresql test.
* Add Python 3 support to Fedora mysql tests.
* Fix uri test server for Python 3 on Fedora.
* Fix iso_extract test for Python 3 on Fedora.
* Add Python 3 support for Fedora to openssl tests.
* Fix dnf group test for Python 3 on Fedora.
* Use force with user deletion in become test.
* Add --installroot to YUM and DNF modules, issue #11310
This continues ansible-modules-core#1558, and
ansible-modules-core#1669
Allow specifying installroot for the yum and dnf modules
to install and remove packages in a location other than /.
* Remove empty aliases
* Simpler installroot set default logic
