Reimplement controller in Go
As of Openshift 3.7, the policybinding API has been shut down (ref. https://docs.openshift.com/container-platform/3.7/release_notes/ocp_3_7_release_notes.html#ocp-37-complete-upstreaming-of-rbac-then-downstreaming).
Migrate the e-group controller to Go instead of fixing it in Python.
Edited by Alberto Rodriguez Peon