cmd/k8s-operator: add DNS policy and config support to ProxyClass (#16887)

DNS configuration support to ProxyClass, allowing users to customize DNS resolution for Tailscale proxy pods.

Fixes #16886

Signed-off-by: Raj Singh <raj@tailscale.com>

k8s-operator/apis/v1alpha1/zz_generated.deepcopy.go

@@ -574,6 +574,16 @@ func (in *Pod) DeepCopyInto(out *Pod) {
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
 	}
+	if in.DNSPolicy != nil {
+		in, out := &in.DNSPolicy, &out.DNSPolicy
+		*out = new(corev1.DNSPolicy)
+		**out = **in
+	}
+	if in.DNSConfig != nil {
+		in, out := &in.DNSConfig, &out.DNSConfig
+		*out = new(corev1.PodDNSConfig)
+		(*in).DeepCopyInto(*out)
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Pod.