Splits the definitions into two dicts, while joining then for now to
preserve the downloads dict.
Update all consumers of the variables, which are roughly:
- manual includes of the download role (which will be removed in the
short future)
- install tasks using the resolved 'dest' to find the artefacts
This will make further division of the downloads role easier.
* extra admission controls now don't have a version in their file names
eventratelimit.v1beta2.yaml.j2 -> eventratelimit.yaml.j2
* cri_socket variable includes the unix:// prefix to be conformat with
upstream