Fix external-dns values override
What
Fixes external-dns cluster values override.
Why
Some cluster need an additional source of istio-virtualservice.
https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/24514
Edited by Filipe Santos
Fixes external-dns cluster values override.
Some cluster need an additional source of istio-virtualservice.
https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/24514