cadvisor container fails to deploy when using podman

[Will Szumski]

Hitting this after enabling prometheus:

```
RUNNING HANDLER [prometheus : Restart prometheus-cadvisor container] ********************************************************************************************************
fatal: [controller0]: FAILED! => {"changed": true, "msg": "'Traceback (most recent call last):\\n File \"/tmp/ansible_kolla_container_payload_tqzzkphf/ansible_kolla_container_payload.zip/ansible/modules/kolla_container.py\", line 425, in main\\n File \"/tmp/ansible_kolla_container_payload_tqzzkphf/ansible_kolla_container_payload.zip/ansible/module_utils/kolla_podman_worker.py\", line 511, in recreate_or_restart_container\\n self.start_container()\\n File \"/tmp/ansible_kolla_container_payload_tqzzkphf/ansible_kolla_container_payload.zip/ansible/module_utils/kolla_podman_worker.py\", line 534, in start_container\\n self.create_container()\\n File \"/tmp/ansible_kolla_container_payload_tqzzkphf/ansible_kolla_container_payload.zip/ansible/module_utils/kolla_podman_worker.py\", line 497, in create_container\\n container = self.pc.containers.create(**args)\\n File \"/opt/kayobe/venvs/kolla-ansible/lib64/python3.9/site-packages/podman/domain/containers_create.py\", line 354, in create\\n response.raise_for_status(not_found=ImageNotFound)\\n File \"/opt/kayobe/venvs/kolla-ansible/lib64/python3.9/site-packages/podman/api/client.py\", line 75, in raise_for_status\\n raise APIError(cause, response=self._response, explanation=message)\\npodman.errors.exceptions.APIError: 500 Server Error: Internal Server Error (statfs /var/lib/docker: no such file or directory)\\n'"}

```

Seems like we are always mounting /var/lib/docker even on a podman deployment. There is support in cadvisor for podman:

https://github.com/google/cadvisor/pull/3021

but I've not investigated whether we have a new enough version. We certainly may need to change the /var/lib/docker bind mount.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/kolla-ansible/+/917872