Merge pull request #63170 from micahhausler/node-ip-fix

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Report node DNS info with --node-ip

**What this PR does / why we need it**:
This PR adds `ExternalDNS`, `InternalDNS`, and `ExternalIP` info for kubelets with the `--nodeip` flag enabled. 

**Which issue(s) this PR fixes** 
Fixes #63158

**Special notes for your reviewer**:

I added a field to the Kubelet to make IP validation more testable (`validateNodeIP` relies on the `net` package and the IP address of the host that is executing the test.) I also converted the test to use a table so new cases could be added more easily.

**Release Notes**
```release-note
Report node DNS info with --node-ip flag
```

@andrewsykim
@nckturner 

/sig node
/sig network

pkg/controller/cloud/node_controller_test.go

@@ -870,7 +870,7 @@ func TestNodeProvidedIPAddresses(t *testing.T) {
 
 	assert.Equal(t, 1, len(fnh.UpdatedNodes), "Node was not updated")
 	assert.Equal(t, "node0", fnh.UpdatedNodes[0].Name, "Node was not updated")
-	assert.Equal(t, 1, len(fnh.UpdatedNodes[0].Status.Addresses), "Node status unexpectedly updated")
+	assert.Equal(t, 3, len(fnh.UpdatedNodes[0].Status.Addresses), "Node status unexpectedly updated")
 
 	cloudNodeController.Run()
 
@@ -878,7 +878,7 @@ func TestNodeProvidedIPAddresses(t *testing.T) {
 
 	updatedNodes := fnh.GetUpdatedNodesCopy()
 
-	assert.Equal(t, 1, len(updatedNodes[0].Status.Addresses), 1, "Node Addresses not correctly updated")
+	assert.Equal(t, 3, len(updatedNodes[0].Status.Addresses), "Node Addresses not correctly updated")
 	assert.Equal(t, "10.0.0.1", updatedNodes[0].Status.Addresses[0].Address, "Node Addresses not correctly updated")
 }