Add the ability to configure the tenant ID in the secret configuration

Bonus: documentation improvement

README.md

@@ -2,7 +2,7 @@
 
 ## Laravel OpenStack
 
-This package provide a service provider to add the "openstack" driver to Laravel Storage.
+This package provides a service provider to add a driver for OpenStack Object Storage (swift) to Laravel Storage.
 
 ## Installation
 
@@ -29,14 +29,17 @@ To configure a new Laravel storage disk on OpenStack, provide a configuration li
 
     'openstack' => [
         'driver'        => 'openstack',
+        'endpoint'      => env('OS_ENDPOINT', ''),
         'username'      => env('OS_USERNAME', ''),
         'password'      => env('OS_PASSWORD', ''),
-        'container'     => env('OS_CONTAINER', ''),
+        'tenant_id'     => env('OS_TENANT_ID', ''),
         'tenant_name'   => env('OS_TENANT_NAME', ''),
-        'endpoint'      => env('OS_ENDPOINT', ''),
-        'service_name'  => env('OS_SERVICE_NAME', 'swift'),
+        'container'     => env('OS_CONTAINER', ''),
         'region'        => env('OS_REGION', ''),
+        'service_name'  => env('OS_SERVICE_NAME', 'swift'),
     ],
 
 ],
 ```
+
+Note that the implementation of OpenStack Object Storage varies from one provider to an other. For instance, the configuration of the `tenant_id` and/or of the `tenant_name` is not always mandatory.

src/Neoxia/Filesystem/OpenStackServiceProvider.php

@@ -22,6 +22,7 @@ public function boot()
             $client = new OpenStack($config['endpoint'], [
                 'username' => $config['username'],
                 'password' => $config['password'],
+                'tenantId' => $config['tenant_id'],
                 'tenantName' => $config['tenant_name'],
             ]);