So your client-application consumes REST-services that are soon to be published by application ‘HrService’. But for now, the published REST-services of HrService are only available in your ‘MockHrService’ local.
To make your mock-services available, you have two options:
Both have their pro’s and con’s, but both do the job very well.
It is also not a bad idea to have your company provide for a mock-server, that is just there for providing mock-services for any project. And then you can add your MockHrService to that one.