Update consul/watch import
Update consul/watch import

The watch package was moved from github.com/hashicorp/consul/watch to github.com/hashicorp/consul/api/watch to live in the API module.
Per: https://github.com/hashicorp/consul/commit/6c885d383a7f303cc6c625108d3e7fc1a35d715d
micro/go-micro,myodc/go-micro