Replace structopt with clap 3

This patch rewrites the CLI interfaces to be used with clap 3.0 instead
of clap 2.x + structopt.

The changes are as minimal as possible, although I did not verify that
the CLI is the same as before.

Signed-off-by: Matthias Beyer <matthias.beyer@ifm.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/crates/core/tedge/src/main.rs b/crates/core/tedge/src/main.rs
index e6313ab3..375debab 100644
--- a/crates/core/tedge/src/main.rs
+++ b/crates/core/tedge/src/main.rs
@@ -2,7 +2,7 @@
 #![deny(clippy::mem_forget)]
 
 use anyhow::Context;
-use structopt::StructOpt;
+use clap::Parser;
 use tedge_users::UserManager;
 use tedge_utils::paths::{home_dir, PathsError};
 
@@ -20,7 +20,7 @@ fn main() -> anyhow::Result<()> {
 
     let _user_guard = user_manager.become_user(tedge_users::TEDGE_USER)?;
 
-    let opt = cli::Opt::from_args();
+    let opt = cli::Opt::parse();
 
     let tedge_config_location = if tedge_users::UserManager::running_as_root() {
         tedge_config::TEdgeConfigLocation::from_default_system_location()