rust/utils: VerbosityOptions: Make sure the options are listed last

See
https://docs.rs/clap/latest/clap/struct.Arg.html#method.display_order
for details.

Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>

rust/utils/src/cli.rs

@@ -209,6 +209,7 @@ pub struct VerbosityOptions {
         short = 'v',
         action = ArgAction::Count,
         global = true,
+        display_order = 999,
     )]
     /// Provide more detailed output.
     verbose: u8,
@@ -219,6 +220,7 @@ pub struct VerbosityOptions {
         action = ArgAction::Count,
         global = true,
         conflicts_with = "verbose",
+        display_order = 999,
     )]
     /// Provide less output.
     quiet: u8,