update PodSpec.Host to PodSpec.NodeName in /pkg/api/types.go and /pkg/api/v1beta3/types.go

pkg/api/deep_copy_generated.go

@@ -1374,7 +1374,7 @@ func deepCopy_api_PodSpec(in PodSpec, out *PodSpec, c *conversion.Cloner) error
 		out.NodeSelector = nil
 	}
 	out.ServiceAccount = in.ServiceAccount
-	out.Host = in.Host
+	out.NodeName = in.NodeName
 	out.HostNetwork = in.HostNetwork
 	if in.ImagePullSecrets != nil {
 		out.ImagePullSecrets = make([]LocalObjectReference, len(in.ImagePullSecrets))