fix!: align PDNS provider by removing MatchParent

[matusf]

Description

PNDS provider is the only one which uses MatchParent functionality. The
MatchParent functionality breaks domain and regex domain filters. It
also makes PDNS provider behave differently than other providers while
having the same configuration. MatchParent can be replaced by using
multiple domain filters. After discussion with maintainers we concluded
that MatchParent should be removed.

The removal was discussed in #3828

---

Fixes #3816 #3828 #3822

Checklist

• Unit tests updated
• End user documentation updated

[k8s-ci-robot]

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[mloiseleur]

/ok-to-test

[mloiseleur]

/retitle fix!: align PDNS provider by removing MatchParent

[matusf]

/retest

[mloiseleur]

/lgtm
/assign szuecs

[szuecs]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: matusf, szuecs

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