SuriService connection to suri: suri-rails doesn't need username and password

[ndushay]

https://github.com/sul-dlss/dor-services/blob/master/lib/dor/services/suri_service.rb#L17-18 expects a username and password when sending http request to suri

Also - should it switch to using faraday or a diff rest-client-du-jour?