Add a container alias for the redis connection instance. (#17722)

Signed-off-by: Hunter Skrasek <hunterskrasek@me.com>

src/Illuminate/Redis/RedisServiceProvider.php

@@ -26,6 +26,10 @@ public function register()
 
             return new RedisManager(Arr::pull($config, 'client', 'predis'), $config);
         });
+
+        $this->app->bind('redis.connection', function ($app) {
+            return $app['redis']->connection();
+        });
     }
 
     /**
@@ -35,6 +39,6 @@ public function register()
      */
     public function provides()
     {
-        return ['redis'];
+        return ['redis', 'redis.connection'];
     }
 }