CI, .cirrus: parallelize containerized integration

[flouthoc]

[NO NEW TESTS NEEDED]

Follow up after: #5552

What type of PR is this?

/kind api-change
/kind bug
/kind cleanup
/kind deprecation
/kind design
/kind documentation
/kind failing-test
/kind feature
/kind flake
/kind other

What this PR does / why we need it:

How to verify it

Which issue(s) this PR fixes:

Special notes for your reviewer:

Does this PR introduce a user-facing change?

None

[flouthoc]

@containers/buildah-maintainers @Luap99 PTAL reduces time of Containerized Integration to 28m

[Luap99]

LGTM

Looks like unit test are now the slow thing that need to be looked at next.

[flouthoc]

LGTM

Looks like unit test are now the slow thing that need to be looked at next.

@Luap99 Yes i am working on that 😄 , will open a follow up PR.

[flouthoc]

@TomSweeneyRedHat @rhatdan @nalind PTAL

[rhatdan]

/approve
/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: flouthoc, Luap99, rhatdan

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