add integration testing for bootstrap token auth

pkg/api/types.go

@@ -3868,6 +3868,10 @@ const (
 	TLSCertKey = "tls.crt"
 	// TLSPrivateKeyKey is the key for the private key field in a TLS secret.
 	TLSPrivateKeyKey = "tls.key"
+	// SecretTypeBootstrapToken is used during the automated bootstrap process (first
+	// implemented by kubeadm). It stores tokens that are used to sign well known
+	// ConfigMaps. They are used for authn.
+	SecretTypeBootstrapToken SecretType = "bootstrap.kubernetes.io/token"
 )
 
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object