replace admin by cloud-init username

proxmox_cloud-init.php

@@ -329,6 +329,7 @@ if (isset($userData['ssh_authorized_keys'])) {
 	$config['system']['user'][0]['authorizedkeys'] = base64_encode("$sshKeys");
 }
 $config['system']['hostname'] = $userData['hostname'];
+$config['system']['user'][0]['name'] = $userData['user'];
 $config['system']['user'][0]['bcrypt-hash'] = $userData['password'];
 // write the configuration
 write_config();