fix(ho): Restore match label selector behavior

[a-dsouza]

What this PR does / why we need it: Fix ignition-server reconciliation for older control plane releases

Which issue(s) this PR fixes (optional, use fixes #<issue_number>(, fixes #<issue_number>, ...) format, where issue_number might be a GitHub issue, or a Jira story:
Fixes #

Checklist

• Subject and description added to both, commit and PR.
• Relevant issues have been referenced.
• This change includes docs.
• This change includes unit tests.

[csrwng]

/approve

[a-dsouza]

/retest

[hasueki]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: a-dsouza, csrwng, hasueki

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[openshift-ci]

@a-dsouza: 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-kubevirt-aws-ovn	027332a	link	false	/test e2e-kubevirt-aws-ovn

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