Add json tag

Kubernetes-commit: d0677f528c03ff5556830bc2e9b9c40824b160ee

tools/clientcmd/api/types.go

@@ -252,7 +252,7 @@ type ExecConfig struct {
 	// recommended as one of the prime benefits of exec plugins is that no secrets need
 	// to be stored directly in the kubeconfig.
 	// +k8s:conversion-gen=false
-	Config runtime.Object
+	Config runtime.Object `json:"-"`
 
 	// InteractiveMode determines this plugin's relationship with standard input. Valid
 	// values are "Never" (this exec plugin never uses standard input), "IfAvailable" (this
@@ -264,7 +264,7 @@ type ExecConfig struct {
 	// client.authentication.k8s.io/v1beta1, then this field is optional and defaults
 	// to "IfAvailable" when unset. Otherwise, this field is required.
 	// +optional
-	InteractiveMode ExecInteractiveMode
+	InteractiveMode ExecInteractiveMode `json:"interactiveMode,omitempty"`
 
 	// StdinUnavailable indicates whether the exec authenticator can pass standard
 	// input through to this exec plugin. For example, a higher level entity might be using
@@ -272,14 +272,14 @@ type ExecConfig struct {
 	// plugin to use standard input. This is kept here in order to keep all of the exec configuration
 	// together, but it is never serialized.
 	// +k8s:conversion-gen=false
-	StdinUnavailable bool
+	StdinUnavailable bool `json:"-"`
 
 	// StdinUnavailableMessage is an optional message to be displayed when the exec authenticator
 	// cannot successfully run this exec plugin because it needs to use standard input and
 	// StdinUnavailable is true. For example, a process that is already using standard input to
 	// read user instructions might set this to "used by my-program to read user instructions".
 	// +k8s:conversion-gen=false
-	StdinUnavailableMessage string
+	StdinUnavailableMessage string `json:"-"`
 }
 
 var _ fmt.Stringer = new(ExecConfig)