Clean up selft-set node labels

cluster/addons/ip-masq-agent/ip-masq-agent.yaml

@@ -46,8 +46,7 @@ spec:
           - name: config
             mountPath: /etc/config
       nodeSelector:
-        # TODO(liggitt): switch to node.kubernetes.io/masq-agent-ds-ready in 1.16
-        beta.kubernetes.io/masq-agent-ds-ready: "true"
+        node.kubernetes.io/masq-agent-ds-ready: "true"
       volumes:
         - name: config
           configMap:

cluster/addons/kube-proxy/kube-proxy-ds.yaml

@@ -27,8 +27,7 @@ spec:
       priorityClassName: system-node-critical
       hostNetwork: true
       nodeSelector:
-        # TODO(liggitt): switch to node.kubernetes.io/kube-proxy-ds-ready in 1.16
-        beta.kubernetes.io/kube-proxy-ds-ready: "true"
+        node.kubernetes.io/kube-proxy-ds-ready: "true"
       tolerations:
       - operator: "Exists"
         effect: "NoExecute"

cluster/addons/metadata-proxy/gce/metadata-proxy.yaml

@@ -88,7 +88,6 @@ spec:
                 fieldPath: metadata.namespace
       # END_PROMETHEUS_TO_SD
       nodeSelector:
-        # TODO(liggitt): switch to cloud.google.com/metadata-proxy-ready=true in v1.16
-        beta.kubernetes.io/metadata-proxy-ready: "true"
+        cloud.google.com/metadata-proxy-ready: "true"
         beta.kubernetes.io/os: linux
       terminationGracePeriodSeconds: 30