SDCICD-1198 ocp test skip regex

[ritmun]

ocp tests dry run is currently the only way to skip tests. A list of all tests is generated using dry run and a test list file is created by inverse grepping it with the skipped test specs regex.

[MrSantamaria]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: MrSantamaria, ritmun

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[openshift-ci]

@ritmun: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/hypershift-pr-check	6529c66	link	false	/test hypershift-pr-check

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