[release-4.20] no-jira: Add priority field to prevent early shutdown

[openshift-cherrypick-robot]

This is an automated cherry-pick of #572

/assign dinhxuanvu

[dinhxuanvu]

/test e2e-aws-ovn-serial

[dinhxuanvu]

/test e2e-aws-ovn-serial

[openshift-ci]

@openshift-cherrypick-robot: 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/e2e-aws-ovn-serial	9d8b243	link	true	/test e2e-aws-ovn-serial

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[ingvagabund]

/approve
/lgtm

[ingvagabund]

/label backport-risk-assessed

[ingvagabund]

@dinhxuanvu this will need a valid bug. Do you also plan to backport this to older releases?

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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[dinhxuanvu]

@ingvagabund Yes, the plan is to backport it to 4.18.