Bump the version number of the kube cert agent label

Not required, but within the spirit of using the version number.
Since the existing kube cert agent deployment will get deleted anyway
during an upgrade, it shouldn't hurt to change the version number.
New installations will get the new version number on the new kube cert
agent deployment.

internal/controller/kubecertagent/kubecertagent.go

@@ -48,7 +48,7 @@ const (
 	// agentPodLabelKey is used to identify which pods are created by the kube-cert-agent
 	// controllers.
 	agentPodLabelKey   = "kube-cert-agent.pinniped.dev"
-	agentPodLabelValue = "v2"
+	agentPodLabelValue = "v3"
 
 	// conciergeDefaultLabelKeyName is the name of the key of the label applied to all Concierge resources.
 	// This name is determined in the YAML manifests, but this controller needs to treat it as a special case below.

internal/controller/kubecertagent/kubecertagent_test.go

@@ -91,13 +91,13 @@ func TestAgentController(t *testing.T) {
 		Spec: appsv1.DeploymentSpec{
 			Replicas: pointer.Int32Ptr(1),
 			Selector: metav1.SetAsLabelSelector(map[string]string{
-				"kube-cert-agent.pinniped.dev": "v2",
+				"kube-cert-agent.pinniped.dev": "v3",
 			}),
 			Template: corev1.PodTemplateSpec{
 				ObjectMeta: metav1.ObjectMeta{
 					Labels: map[string]string{
 						"extralabel":                   "labelvalue",
-						"kube-cert-agent.pinniped.dev": "v2",
+						"kube-cert-agent.pinniped.dev": "v3",
 					},
 				},
 				Spec: corev1.PodSpec{
@@ -199,7 +199,7 @@ func TestAgentController(t *testing.T) {
 			Namespace:         "concierge",
 			Name:              "pinniped-concierge-kube-cert-agent-xyz-1234",
 			UID:               types.UID("pinniped-concierge-kube-cert-agent-xyz-1234-test-uid"),
-			Labels:            map[string]string{"kube-cert-agent.pinniped.dev": "v2"},
+			Labels:            map[string]string{"kube-cert-agent.pinniped.dev": "v3"},
 			CreationTimestamp: metav1.NewTime(now.Add(-2 * time.Hour)),
 		},
 		Spec:   corev1.PodSpec{},