Add "Visible only to admins" messaging to renewal banners
Overview
The banners that we display to admins and group owners when their subscription is expiring can generate concern for admins that are worried all of their users are seeing the message. It isn't clear to whom the message is shown.
Proposal
Add some qualifier copy or similar to assure the admin/group owner that they are the ones seeing this message.
Example from slack:
Customer quote:
"It should indicate on the message that it is for admins only. Like Slack has the Visible to only you
on messages that come just to you but are in a channel with other people. Just a little This message only shows for GitLab Admins
or something would be good. Otherwise I (and the other admins) worried that the entire instance would see this message and that would be awkward and disruptive."