force lowercase in auth add context, too

Author: sgsullivan

cmd/authAddContext.go

@@ -18,6 +18,7 @@ package cmd
 import (
 	"fmt"
 	"os"
+	"strings"
 
 	"github.com/spf13/cobra"
 
@@ -38,6 +39,8 @@ Use this if you've already setup contexts with "auth init".`,
 		insecure, _ := cmd.Flags().GetBool("insecure")
 		timeout, _ := cmd.Flags().GetInt("timeout")
 
+		contextName = strings.ToLower(contextName)
+
 		file, err := getExpectedConfigPath()
 		if err != nil {
 			lwCliInst.Die(err)