delete all duplicate empty blanks

Signed-off-by: Xiang Dai <764524258@qq.com>

cmd/kubeadm/app/cmd/alpha/selfhosting.go

@@ -53,7 +53,7 @@ var (
 		` + cmdutil.AlphaDisclaimer)
 
 	selfhostingExample = normalizer.Examples(`
-		# Converts a static Pod-hosted control plane into a self-hosted one. 
+		# Converts a static Pod-hosted control plane into a self-hosted one.
 
 		kubeadm alpha phase self-hosting convert-from-staticpods
 		`)

cmd/kubeadm/app/cmd/join.go

@@ -77,7 +77,7 @@ var (
 	joinLongDescription = dedent.Dedent(`
 		When joining a kubeadm initialized cluster, we need to establish
 		bidirectional trust. This is split into discovery (having the Node
-		trust the Kubernetes Control Plane) and TLS bootstrap (having the 
+		trust the Kubernetes Control Plane) and TLS bootstrap (having the
 		Kubernetes Control Plane trust the Node).
 
 		There are 2 main schemes for discovery. The first is to use a shared
@@ -93,7 +93,7 @@ var (
 
 		If you use a shared token for discovery, you should also pass the
 		--discovery-token-ca-cert-hash flag to validate the public key of the
-		root certificate authority (CA) presented by the Kubernetes Control Plane. 
+		root certificate authority (CA) presented by the Kubernetes Control Plane.
 		The value of this flag is specified as "<hash-type>:<hex-encoded-value>",
 		where the supported hash type is "sha256". The hash is calculated over
 		the bytes of the Subject Public Key Info (SPKI) object (as in RFC7469).

cmd/kubeadm/app/cmd/phases/init/kubeconfig.go

@@ -45,7 +45,7 @@ var (
 			short: "Generates a kubeconfig file for the kubelet to use *only* for cluster bootstrapping purposes",
 			long: normalizer.LongDesc(`
 					Generates the kubeconfig file for the kubelet to use and saves it to %s file.
-			
+
 					Please note that this should *only* be used for cluster bootstrapping purposes. After your control plane is up,
 					you should request all kubelet credentials from the CSR API.`),
 		},

cmd/kubeadm/app/cmd/phases/init/uploadconfig.go

@@ -36,7 +36,7 @@ import (
 
 var (
 	uploadKubeadmConfigLongDesc = fmt.Sprintf(normalizer.LongDesc(`
-		Uploads the kubeadm ClusterConfiguration to a ConfigMap called %s in the %s namespace. 
+		Uploads the kubeadm ClusterConfiguration to a ConfigMap called %s in the %s namespace.
 		This enables correct configuration of system components and a seamless user experience when upgrading.
 
 		Alternatively, you can use kubeadm config.

cmd/kubeadm/app/cmd/upgrade/node.go

@@ -43,7 +43,7 @@ var (
 	upgradeNodeConfigLongDesc = normalizer.LongDesc(`
 		Downloads the kubelet configuration from a ConfigMap of the form "kubelet-config-1.X" in the cluster,
 		where X is the minor version of the kubelet. kubeadm uses the --kubelet-version parameter to determine
-		what the _desired_ kubelet version is. Give 
+		what the _desired_ kubelet version is. Give
 		`)
 
 	upgradeNodeConfigExample = normalizer.Examples(fmt.Sprintf(`

cmd/kubeadm/app/util/config/testdata/defaulting/master/incomplete.yaml

@@ -1,5 +1,5 @@
 apiVersion: kubeadm.k8s.io/v1beta1
-kind: InitConfiguration	
+kind: InitConfiguration
 bootstrapTokens:
 - token: s73ybu.6tw6wnqgp5z0wb77
 localAPIEndpoint: