Add CI permissions to doc/permissions/permissions.md

We are missing all CI permissions from https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/permissions/permissions.md.

We should update the table to make it easier for everyone.

Milestone changed to 8.4

Milestone changed to 8.5

/cc @axil

Added ~15078 label

Ok, we'll have to talk and test things to properly add these :)

Let's leave it for next week if I don't get a chance by Friday.

Reassigned to @axil

@axil I did cc you, because you should know what is happening and what we missing. I think that I'll just do it. I have the best insight into the permission model. No need for you to focus on this right now.

Thanks, I would dig into the code to know what really happens. I'll focus on CI more for 8.5.

Added ~147284 label

Removed ~147284 label

Added ~19173 label

It's done.

Status changed to closed