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Automatic merge from submit-queue Handle federated service name lookups in kube-dns. For the domain name queries that fail to match any records in the local kube-dns cache, we check if the queried name matches the federation pattern. If it does, we send a CNAME response to the federated name. For more details look at the comments in the code. Tests are coming ... Also, this PR is based on @ArtfulCoder's PR #23930. So please review only the last commit here. PTAL @ArtfulCoder @thockin @quinton-hoole @nikhiljindal []()