Deferred package and config management for offline minions

[sbluhm]

Short description

When a minion is offline, the application of configuration changes and package deployements should be applied once the minion is connecting to Uyuni again.

Details

Currently, when a minion is offline, application of configuration and package updates fail.

Managing minions in this scenario requires manual interactions.

Ideally, changes should be applied when a minion is reachable again.

Some scenarios when a minion is regularly offline:

• Clients are only started on a need bases (application specific clients for labs or machines)
• Clients that are intentionally not connected to networks or offsite networks.
• Mobile clients/laptops