Because we're using vagrant, a ssh config file will be created for
each nodes with options like user, host, port, identity, etc...
But via tox we're override ANSIBLE_SSH_ARGS to use this file. This
remove the default value set in ansible.cfg.
Also adding PreferredAuthentications=publickey because CentOS/RHEL
servers are configured with GSSAPIAuthenticationis enabled for ssh
server forcing the client to make a PTR DNS query.
Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>
the rhel8 image used is an outdated beta version, it is not worth it to
maintain this image upstream, since it's possible to test podman with a
newer version of centos/atomic-host image.
Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>