Preserve order of securitySchemes (#14536)

* Remove alphabetical sort

* Update integration testing expectations

* Regenerate files

samples/server/petstore/php-symfony/SymfonyBundle-php/README.md

@@ -153,12 +153,6 @@ Class | Method | HTTP request | Description
 ## Documentation For Authorization
 
 
-## api_key
-
-- **Type**: API key
-- **API key parameter name**: api_key
-- **Location**: HTTP header
-
 ## petstore_auth
 
 - **Type**: OAuth
@@ -168,6 +162,12 @@ Class | Method | HTTP request | Description
  - **write:pets**: modify pets in your account
  - **read:pets**: read your pets
 
+## api_key
+
+- **Type**: API key
+- **API key parameter name**: api_key
+- **Location**: HTTP header
+
 
 ## Author