release: Add all the cluster template flavors

[qinqon]

What this PR does / why we need it: There were missing template flavors at the github release used when a user generate a cluster with --infrastructure kubevirt, this change add all of the flavors and also check that the kccm ones are generated.

Special notes for your reviewer: The github action has being refactored for simplicity

Release notes:

Add all the cluster flavors

[qinqon]

/cc @nunnatsa

[coveralls]

Pull Request Test Coverage Report for Build 3564939903

• 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 3546440746:	0.0%
Covered Lines:	952
Relevant Lines:	1850

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💛 - Coveralls

[k8s-triage-robot]

Unknown CLA label state. Rechecking for CLA labels.

Send feedback to sig-contributor-experience at kubernetes/community.

/check-cla /easycla

[qinqon]

/ok-to-test

[nunnatsa]

Now I see that this is the reason that the check-gen lane has failed.

[qinqon]

Now I see that this is the reason that the check-gen lane has failed.

Fixed @nunnatsa can you take another view ?

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nunnatsa, qinqon

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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)~~ [nunnatsa] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[nunnatsa]

/lgtm