Artifact upload fails with RuntimeError 500, Repo key cannot be empty

[fuzzmz]

When trying to upload an artifact we error out with

RuntimeError: {
  "errors" : [ {
    "status" : 500,
    "message" : "Repo key cannot be empty. Path: api/storage/MoonFish"
  } ]
}

Code to reproduce the issue:

from artifactory import ArtifactoryPath


def main():
    artifactory = ArtifactoryPath("http://my-artifactory/artifactory/", auth=('user', 'password'))
    upload_path = artifactory / 'upload-dest'
    upload_path.deploy_file('./sample-file')


if __name__ == '__main__':
    main()

Problem is caused by get_stat_json creating an invalid Artifactory Storage API request by duplicating the / between artifactory and api.

In the example above, when we reach get_stat_json and process the url, instead of getting
http://my-artifactory/artifactory/api/storage/upload-dest
we get http://my-artifactory/artifactory//api/storage/upload-dest (notice the // between artifactory and api).