TT#133053 Fix 500 error on /api/authtokens

* fix typo 'users' to 'user' and
	    'role' to 'roles' which were causing
	    the Internal Server Error

Change-Id: I3cabadafe34d66a429038dcd2c5b0de797cc6ef1

lib/NGCP/Panel/Controller/API/AuthTokens.pm

@@ -67,8 +67,8 @@ sub POST :Allow {
 
     $res->{token} = NGCP::Panel::Utils::Auth::generate_auth_token($self, $c,
         $resource->{type},
-        $c->users->role,
-        $c->users->id,
+        $c->user->roles,
+        $c->user->id,
         $resource->{expires} // 10,
     );