Spring Cloud Openfeign Fix expansion of @RequestParam empty lists

https://github.com/OpenFeign/feign/pull/1200

Comment From: OlgaMaciaszek

@jayzch That fix was merged directly in OpenFeign. Not sure why you have opened this issue here?

Comment From: jayzch

@OlgaMaciaszek spring-cloud-openfeign pom should update

Comment From: OlgaMaciaszek

Closing in favour of https://github.com/spring-cloud/spring-cloud-openfeign/issues/333.