Replace kubevirt deploy tasks with the operator (#536)

[rthallisey]

Use Ansible to orchestrate deployment while OLM continues to develop.

This PR will break CI until operator PRs merge:

• https://github.com/kubevirt/kubevirt/pull/1860
• https://github.com/kubevirt/kubevirt/pull/1803
• https://github.com/kubevirt/containerized-data-importer/pull/579

(cherry picked from commit 3f57e5a8e3f71ecfb784cb15e107ef084687266d)

Install KubeVirt with an operator