* 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.
Crypto namespace contains the openssl modules. It has no integration
testing as of now.
This commits aims to add integration tests for the crypto namespace.
This will make it easier to spot breaking changes in the future.
This tests currently apply to:
* openssl_privatekey
* openssl_publickey
* openssl_csr
