src/config/network.rs: make it compatible with pve

and depend on proxmox 0.1.26

src/bin/proxmox-backup-client.rs

@@ -2421,7 +2421,8 @@ fn main() {
         .insert("catalog", catalog_mgmt_cli())
         .insert("task", task_mgmt_cli());
 
-    run_cli_command(cmd_def, Some(|future| {
+    let rpcenv = CliEnvironment::new();
+    run_cli_command(cmd_def, rpcenv, Some(|future| {
         proxmox_backup::tools::runtime::main(future)
     }));
 }