[9.x] Add username option for phpredis with redis ACL (#41683)

* Update PhpRedisConnector.php

Allow to use username and password string for phpredis connection, instead of a password array.
Fix laravel crash if different environement (ex: one server with ACL, one with just a password), have to edit database.php to use an array in password field. Now you can use username and password.

* Update PhpRedisConnector.php

* formatting

* remove whitespace

Co-authored-by: Taylor Otwell <[email protected]>

Author: neoteknic

src/Illuminate/Redis/Connectors/PhpRedisConnector.php

@@ -84,7 +84,11 @@ protected function createClient(array $config)
             $this->establishConnection($client, $config);
 
             if (! empty($config['password'])) {
-                $client->auth($config['password']);
+                if (isset($config['username']) && is_string($config['password'])) {
+                    $client->auth([$config['username'], $config['password']]);
+                } else {
+                    $client->auth($config['password']);
+                }
             }
 
             if (isset($config['database'])) {