Miciah Masters af258c819d e2e: Remove kubeadm-ism in DNS HostNetwork test ...

The "[sig-network] DNS HostNetwork should resolve DNS of partial qualified
names for services on hostNetwork pods with dnsPolicy:
ClusterFirstWithHostNet" test assumes that a service named "kube-dns"
exists in the "kube-system" namespace.  This assumption is valid if the
cluster was configured using kubeadm, but the assumption may be invalid
otherwise.

As the test uses dnsPolicy: ClusterFirst (as opposed to dnsPolicy: None),
it does not need to specify the name server in dnsConfig.  Omitting
dnsConfig.nameservers obviates the need to look up the service.

Follow-up to commit add4652352.

* test/e2e/network/dns.go: Don't look up or use the kube-dns cluster IP
address as it might not exist on clusters that were not configured using
kubeadm.

2022-12-22 19:00:29 -05:00

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