Ansible 11 dropped support for the python version on Ubuntu bionic. Some
of our test jobs continue to test against bionic nodes to cover
functioanlity there. Pin these jobs back to Ansible 9 so that Ansible
can speak to these test nodes
We also drop the bionic and focal image types from the mirror job
entirely because we no longer have any bionic or focal image nodes
acting as mirrors.
Change-Id: I12718599f7e252f45a625e96a0dbbbce9768d008
3f10b06710