This is to align the classes' signatures for the big refactor ahead. Specifically, in OCIRegistry: - receive just the image name (whatever it could be) and not the two "orga" and "name" parameters which were too specific for image names with only two "tokens" - also receive username and password, and store the ready-to-use encoded credentials - changed slightly a couple of url-massaging functions to reflect the fact that the server has now the schema in it (not faking it anymore, more robust) And in ImageHandler: - receive now just the registry and use it - it will hold only one registry now, so now need for the "dst_" prefix Also in the upload-command command, changed from passing the components to just pass the registry itself. Note I minimized the changes in the tests; some of those may be simplified further, but they will disappear in the refactor, so no need for the noise now.