container-common: support podman on Ubuntu
Currently we're only able to use podman on ubuntu if podman's
installation is done manually before the ceph-ansible execution
because the deb package is present in an external repository.
We already manage the docker-ce installation via an external
repository so we should be able to allow the podman installation
with the same mechanism too.
https://github.com/containers/libpod/blob/master/install.md#ubuntu
Resolves: #3947
Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>
(cherry picked from commit
518ab794fb0965c6ca8af56f18e0c54529eca8d5)