Fix some small lint errors

Signed-off-by: Ryan Richard <richardry@vmware.com>

cmd/pinniped/cmd/flag_types.go

@@ -24,6 +24,8 @@ func (c *conciergeMode) String() string {
 	switch *c {
 	case modeImpersonationProxy:
 		return "ImpersonationProxy"
+	case modeTokenCredentialRequestAPI:
+		return "TokenCredentialRequestAPI"
 	default:
 		return "TokenCredentialRequestAPI"
 	}

cmd/pinniped/cmd/flag_types_test.go

@@ -1,3 +1,6 @@
+// Copyright 2021 the Pinniped contributors. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
 package cmd
 
 import (

cmd/pinniped/cmd/login_oidc.go

@@ -190,7 +190,6 @@ func runOIDCLogin(cmd *cobra.Command, deps oidcLoginCommandDeps, flags oidcLogin
 
 	// The exact behavior depends on in which mode the Concierge is operating.
 	switch flags.conciergeMode {
-
 	case modeTokenCredentialRequestAPI:
 		// do a credential exchange request
 		cred, err := deps.exchangeToken(ctx, concierge, token.IDToken.Token)

cmd/pinniped/cmd/login_static.go

@@ -122,7 +122,6 @@ func runStaticLogin(out io.Writer, deps staticLoginDeps, flags staticLoginParams
 
 	// If the concierge is enabled, we need to do extra steps.
 	switch flags.conciergeMode {
-
 	case modeTokenCredentialRequestAPI:
 		// do a credential exchange request
 		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
@@ -146,5 +145,4 @@ func runStaticLogin(out io.Writer, deps staticLoginDeps, flags staticLoginParams
 	default:
 		return fmt.Errorf("unsupported Concierge mode %q", flags.conciergeMode.String())
 	}
-
 }