otherwise we get a conflict with python-ipaddress which is a
dependency of python2-pip and can't really be removed!
Installing from RPM is also a no-go b/c openstacksdk is
not available in EPEL 7. OTOH the RDO repositories which
OpenStack recommends have older version (0.11) and ansible wants
0.12 or later!
Related: rhbz#1656105
See:
fd61b54679 (diff-b4ef698db8ca845e5845c4618278f29a)
Note: may also affect master/rhel8-branch but haven't seen it
so far. For master we can do:
dnf install ansible python3-openstacksdk
Not so easy on RHEL 7
