Activating DNSAnnotation controller

[FullyScaled]

How to categorize this issue?

/area networking
/kind enhancement
/priority 3

What would you like to be added:

Activation of DNSAnnotation Resource (https://github.com/gardener/external-dns-management/blob/master/examples/70-dnsannotation.yaml)

Why is this needed:

The dns.gardener.cloud/dnsnames annotation currently cannot be used together with the istio ingressgateway that comes when using kyma. Those annotations will be lost during upgrades. Therefore its required to create an independent resource for letting gardener set dns entries. DNSEntry does not support referring kubernetes services directly. Since IP-Adresses of cloud provider loadbalancers can change, there is the need for the DNSAnnotation in a kyma based usage scenario.