Automatically choose podman if is present

[cardil]

When podman is installed, use it automatically. User still can set CONTAINER_ENGINE variable to override this, choosing his preferred engine.

/kind enhancement

[openshift-ci]

@cardil: The label(s) kind/enhancement cannot be applied, because the repository doesn't have them.

In response to this:

When podman is installed, use it automatically. User still can set CONTAINER_ENGINE variable to override this, choosing his preferred engine.

/kind enhancement

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: cardil
Once this PR has been reviewed and has the lgtm label, please assign deepsm007 for approval. For more information see the Kubernetes Code Review Process.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[openshift-ci-robot]

[REHEARSALNOTIFIER]
@cardil: no rehearsable tests are affected by this change

[openshift-ci]

@cardil: all tests passed!

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.