Added support for TeamCity Role Assignments for User Groups

[justinto-guidewire]

Implemented the following REST API's

• POST /app/rest/userGroups/{groupLocator}/roles/{roleId}/{scope}
• DELETE /app/rest/userGroups/{groupLocator}/roles/{roleId}/{scope}
• GET /app/rest/userGroups/{groupLocator}/roles/{roleId}/{scope}
• GET /app/rest/userGroups/{groupLocator}/roles

[cvbarros]

This is an awesome feature!

Before moving forward with further work to get this merged, I'd like to take a moment and discuss the API design around Users/Groups/Roles:

My proposal is that instead of relying on a service for GroupRoleAssignment, specific to managing roles for group, we flip the switch a bit and design a more general, discoverable and stable approach for these operations.

Seeing from the API docs and UI features, Roles can be assigned to either Users or Groups.

However, don't think we'll be able to manage the roles themselves anytime soon via the REST API. Existing upstream issue has been around for quite some time: https://youtrack.jetbrains.com/issue/TW-37581

In that sense, I'd say we could have a RoleAssignmentService in which we could use to manage roles for both users and groups, what do you think?

[justinto-guidewire]

Hi @cvbarros, I think that's a great idea, and looking at the API for users and groups, it's similar enough that we can just implement both at the same time.

We'll refactor this a little bit and update this PR, along with the terraform provider one as well.

[justinto-guidewire]

@cvbarros, unfortunately, the Users API is not implemented yet, so we didn't implement the role assignment for users also. Maybe we can do that in another PR later on.

Please let us know if the latest commit is inline with what you had in mind. Thanks!

[cvbarros]

Awesome! Thanks for this 🙇 💯