alter:优化配置opt

 <?php
 
 return [
-    'host'    => '',
     'cert_no' => '',
     'client'  => [
-        'timeout' => 60
+        'base_uri' => '',
+        'timeout'  => 60,
     ]
 ];

@@ -27,13 +27,8 @@ class Client
      */
     protected function __construct(RequestInterface $request)
     {
-        $clientConfig     = (array)config('customs.client', [
-            'timeout' => 30
-        ]);
-        $config           = $clientConfig + [
-                'base_uri' => config('customs.host')
-            ];
-        $this->guzzleHttp = new GuzzleHttp($config);
+        $clientConfig     = (array)config('customs.client');
+        $this->guzzleHttp = new GuzzleHttp($clientConfig);
         $this->request    = $request;
     }