Description of problem:
* "selinux" python module is needed by ansible (jinja2 templating) and this special module cannot be installed using pip.
* the whole point of having python36 on centos7 was to prepare code to migrate, if we don't have selinux we cannot test it.
* yes for python2 there is the "libselinux-python" package, but we need the same for python3.
The python3-selinux is already included in rhel8 but this does not help with rhel7/centos7.
selinux python bindings are extremely small but they are binary dependent on python version and kernel/selinux, so we cannot use pip virtualenv to install them, they need to be shipped inside the same repository that ships python (as a separate rpm or even included with python itself).
*** This bug has been marked as a duplicate of bug 1719978 ***