Tests a basic quota setting workflow.

Initial storage
{
  "usage": 0,
  "quota": 1073741824,
  "overrideActive": false
}
Applying override
{
  "usage": 0,
  "quota": 10000,
  "overrideActive": true
}
Connecting a second session
{
  "usage": 0,
  "quota": 10000,
  "overrideActive": true
}
Disconnecting original session (which held the override)
{
  "usage": 0,
  "quota": 1073741824,
  "overrideActive": false
}