@nejch can you please have a look on this PR?

• On implementation of the rmote_import function, I have basically copied the logic from import_project, since the common code was not large enough to be refactored, I think into Mixin or a private function. Feel free to suggest any refactoring techinique I can use.
• On testing, have added kind of a negative functional test which asserts the expected error. I have verified the error from the gitlab spec, here. I am using a ftp url which violates the validate_url predicate there and hence the error.
• I am not including s3 support here, will add that as separate PR, linked to separate issue(maybe I can raise it), once this goes through. This is my first one here so want this to be a little atomic :)
  Thanks.

@abhiandthetruth that makes sense! Will check again in a bit, and sure you can go ahead with a separate issue. Yes, currently when we add custom methods it still means copying a bit of code, that needs some rework later.

Yup will clean them up in the other PR. Thanks! Waiting for my first merge in the repo!