Panic in openshift rolebinding

[sebgoa]

In openshift, rolebindings can have an entry userNames: null

The parsing panics because this is not a string

[luksa]

@sebgoa are you sure? We don't even parse the userNames or the groupNames fields (which we probably should). I've tried visualizing the system:image-pullers role binding, which has userNames: null and it seems to work fine.

[sebgoa]

This was an openshift 3.11 cluster wtih standard rolebindings. Unfortunately I don't have access to the platform anymore and could not dump the roles in here. I assumed this was due to the userNames but I definitely don't know for sure.

I just add panics when running rback saying that it could not "parse" int.

[gparvin]

I don't have an openshift 3.11 environment right now but I made a PR to fix what sounds like a similar issue in openshift 4: #20