[PHP] Decommission "packagePath", add new option "packageName" (#681)

* remove packagePath from php file location, use -o instead

* fix php symfony top folder

* restore pacakgePath

* update php laraavel samples

* remove packagePath from PHP generator

* add new silex files

* update window batch - php silex

* fix openapi3 silex script

samples/server/petstore/php-laravel/lib/app/Http/Controllers/AnotherFakeController.php

@@ -31,14 +31,14 @@ class AnotherFakeController extends Controller
     }
 
     /**
-     * Operation 123testSpecialTags
+     * Operation call123TestSpecialTags
      *
      * To test special tags.
      *
      *
      * @return Http response
      */
-    public function 123testSpecialTags()
+    public function call123TestSpecialTags()
     {
         $input = Request::all();
 
@@ -47,11 +47,11 @@ class AnotherFakeController extends Controller
 
         //not path params validation
         if (!isset($input['client'])) {
-            throw new \InvalidArgumentException('Missing the required parameter $client when calling 123testSpecialTags');
+            throw new \InvalidArgumentException('Missing the required parameter $client when calling call123TestSpecialTags');
         }
         $client = $input['client'];
 
 
-        return response('How about implementing 123testSpecialTags as a patch method ?');
+        return response('How about implementing call123TestSpecialTags as a patch method ?');
     }
 }