Disable bricks fs and configure commands (#320)

## Changes
<!-- Summary of your changes that are easy to understand -->

## Tests
<!-- How is this tested? -->

cmd/configure/configure.go

@@ -44,6 +44,7 @@ func (cfg *Configs) loadNonInteractive(cmd *cobra.Command) error {
 var configureCmd = &cobra.Command{
 	Use:    "configure",
 	Short:  "Configure authentication",
+	Hidden: true,
 	RunE: func(cmd *cobra.Command, args []string) error {
 		profile, err := cmd.Flags().GetString("profile")
 		if err != nil {

cmd/fs/fs.go

@@ -10,6 +10,7 @@ var fsCmd = &cobra.Command{
 	Use:    "fs",
 	Short:  "Filesystem related commands",
 	Long:   `Commands to do DBFS operations.`,
+	Hidden: true,
 }
 
 func init() {

cmd/fs/ls.go

@@ -11,6 +11,7 @@ var lsCmd = &cobra.Command{
 	Use:    "ls <dir-name>",
 	Short:  "Lists files",
 	Long:   `Lists files`,
+	Hidden: true,
 
 	RunE: func(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("TODO")