Automatic merge from submit-queue

federation service e2e: Creating configmap for kube-dns

Ref #37105 and #37143.

Creating kube-dns config map to pass federations flag to kube-dns.
This is required since we moved to the new add on manager. With the old add on manager, we were using kube-dns rc that included the federations flag.

cc @kubernetes/sig-cluster-federation @madhusudancs @bowei @MrHohn 

Verified that the tests pass with this change.