When using uppercase txt prefix records are not deleted

[p53]

i used in configuration
- name: EXTERNAL_DNS_TXT_PREFIX
value: "EXTERNAL-DNS"

when i created ingress, external-dns properly created record but when i deleted ingress it was writing:

msg="Skipping endpoint hello-world-ingress-default.example.org 300 IN A 10.220.65.103 map[] because owner id does not match, found: "", required: "example.org""

i found that external-dns lowers dns records before writing to dns but when parsing TXT records which are fetched from DNS it doesn't lower prefix, so it doesn't match, will send patch

[p53]

#1013

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[linki]

/remove-lifecycle stale

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@fejta-bot: Closing this issue.

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