* Add element updates (non-UI)
This can be controlled with autoinstall
updates: security or all
Also an API for controlling this:
curl --silent --unix-socket .subiquity/socket a/updates ->
"security"
curl -d '"all"' --unix-socket .subiquity/socket a/updates
* Automated tests - log grep for default/none/all states
* Enforce possible values on Updates controller
Route all the various get/set thru 2 common functions.
Validate incoming data.
Accidental schema updates are unintended, so enforce that. Schema
updates that don't break API are fine, we can handle that by manually
regenerating the schema at such time.