Allow podman to push images to insecure kubevirtci registry

[brianmcarey]

Signed-off-by: Brian Carey bcarey@redhat.com

What this PR does / why we need it: These changes are required to run the e2e test job under podman. Kubevirt CI has been working on moving all jobs to run under podman and the old docker in docker setup will no longer be supported.

Add the insecure kubevirtci registry to registries.conf when using podman to push images to the registry. Currently this fails in CI as podman is unable to push to insecure registries by default.

https://prow.ci.kubevirt.io/view/gs/kubevirt-prow/pr-logs/pull/kubernetes-sigs_cluster-api-provider-kubevirt/207/pull-kubernetes-sigs-cluster-api-provider-kubevirt-e2e/1592063138562314240#1:build-log.txt%3A510

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

Release notes:

NONE

[k8s-ci-robot]

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[nunnatsa]

/ok-to-test

[nunnatsa]

/lgtm

[cchengleo]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: brianmcarey, cchengleo, davidvossel, nunnatsa

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/kubernetes-sigs/cluster-api-provider-kubevirt/blob/main/OWNERS)~~ [cchengleo,davidvossel,nunnatsa] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[coveralls]

Pull Request Test Coverage Report for Build 3462567482

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 51.459%

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Totals
Change from base Build 3462320903:	0.0%
Covered Lines:	952
Relevant Lines:	1850

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💛 - Coveralls

[davidvossel]

/lgtm