Merge pull request #54639 from danehans/dns_update

Automatic merge from submit-queue (batch tested with PRs 54331, 54655, 54320, 54639, 54288). 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>.

Updates kube-dns in kubeadm to 1.14.7

**What this PR does / why we need it**:
Adds support for the latest kube-dns image (1.14.7) introduced by https://github.com/kubernetes/kubernetes/pull/54443

**Special notes for your reviewer**:
Required for IPv6 support.

/area ipv6
/sig network

**Release note**:
```NONE
```

cmd/kubeadm/app/phases/addons/dns/versions.go

@@ -22,7 +22,7 @@ import (
 
 const (
 	kubeDNSv180AndAboveVersion = "1.14.5"
-	kubeDNSv190AndAboveVersion = "1.14.6"
+	kubeDNSv190AndAboveVersion = "1.14.7"
 
 	kubeDNSProbeSRV = "SRV"
 	kubeDNSProbeA   = "A"
@@ -31,7 +31,7 @@ const (
 // GetKubeDNSVersion returns the right kube-dns version for a specific k8s version
 func GetKubeDNSVersion(kubeVersion *version.Version) string {
 	// v1.8.0+ uses 1.14.5
-	// v1.9.0+ uses 1.14.6
+	// v1.9.0+ uses 1.14.7
 	// In the future when the kube-dns version is bumped at HEAD; add conditional logic to return the right versions
 	// Also, the version might be bumped for different k8s releases on the same branch
 	if kubeVersion.Major() == 1 && kubeVersion.Minor() >= 9 {

cmd/kubeadm/app/phases/addons/dns/versions_test.go

@@ -52,7 +52,7 @@ func TestGetKubeDNSVersion(t *testing.T) {
 		},
 		{
 			k8sVersion: "v1.9.0",
-			expected:   "1.14.6",
+			expected:   "1.14.7",
 		},
 	}
 	for _, rt := range tests {

cmd/kubeadm/app/phases/upgrade/compute_test.go

@@ -399,7 +399,7 @@ func TestGetAvailableUpgrades(t *testing.T) {
 					After: ClusterState{
 						KubeVersion:    "v1.9.0-alpha.1",
 						KubeadmVersion: "v1.9.0-alpha.1",
-						DNSVersion:     "1.14.6",
+						DNSVersion:     "1.14.7",
 					},
 				},
 			},