Run e2e in parallel (4 processes)

[awels]

What this PR does / why we need it: Modified running of the e2e to be parallell, defaulted to 4 concurrent processes. Use kubevirtci 1.25 instead of 1.26 until the centos 9 version stabilizes. After each failure immediately dump the cluster state so it is easier to investigate the failures.

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

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