Description of problem:
Right now when a system is unregistered, we're kind of sending mixed signals. The status icon on My Installed Products is gray, as is the product icon in the table, and the table status text is Unknown. Yet, the Status string up top has our old string: "Keep your system up to date by registering.", and the Details pane says "System is not registered". If you run 'subscription-manager status', you also get 'Unknown' as the Overall Status, with no additional strings or context. 

For systems that are unregistered and do not have entitlement certs, I think we can be more clear and show their status as red, as well as list their status in the table as Not Registered, like we used to. If the system is kept unregistered, and entitlement certs are imported, then it makes sense to me to show Unknown like we do now.

Ideally, we should return 'Overall Status: Not Registered' from 'subscription-manager status' as well or at least add a string to the output that says their system isn't registered if we're going to continue to show Unknown there.



Version-Release number of selected component (if applicable):
subcription-manager-1.9.0-1.git

How reproducible:
Always

Steps to Reproduce:
1. Launch subscription-manager-gui
2. If needed, unregister your system

Actual results:
System shows Unknown in several places as its status

Expected results:
System should know that it isn't registered and doesn't have any entitlements imported and show itself as red, with a status of Unregistered

Additional info: