Fix directory and reports stop channel urls

Report stop channel and Directory stop channel methods uses a different service path then their default class. When the lib build the full service url, the service path is duplicated.

Author: ricardofontanelli

src/Google/Service/Resource.php

@@ -255,6 +255,13 @@ protected function convertToArrayAndStripNulls($o)
    */
   public function createRequestUri($restPath, $params)
   {
+    // Override the default servicePath address if the $restPath use a / 
+    if ('/' == substr($restPath, 0, 1)) {
+      $requestUrl = substr($restPath, 1);
+    } else {
+      $requestUrl = $this->servicePath . $restPath;      
+    }
+    
     // code for leading slash
     $requestUrl = $this->servicePath . $restPath;
     if ($this->rootUrl) {