✨ feat/remove the possibility to add the same IP address twice in cluster update command

Author: outscale-rde

oks_cli/cluster.py

@@ -508,7 +508,7 @@ def cluster_update_command(ctx, project_name, cluster_name, description, admin,
                         raise click.ClickException(f"Unable to resolve 'my-ip': {e}")
                 else:
                     resolved_ips.append(ip)
-            cluster_config['admin_whitelist'] = resolved_ips
+            cluster_config['admin_whitelist'] = list(dict.fromkeys(resolved_ips))
 
     if version is not None:
         cluster_config['version'] = version