Add ServiceAddressResolver class to support LoadBalanced RestTemplate…#1602

xzxiaoshan wants to merge 2 commits intospring-cloud:4.3.xspring-cloud/spring-cloud-commons:4.3.xfrom

xzxiaoshan:4.3.x-directUrixzxiaoshan/spring-cloud-commons:4.3.x-directUriCopy head branch name to clipboard