Operator should error on missing baseDomain whenever no autodetection is possible

[evakhoni]

Currently, creating a jumpstarter CR with anything in .spec but without .spec.baseDomain is causing deployment of controller and routers that are unreachable, with no visible errors, creating an unusable state with no indication to the user.

suggested changes:

• implement baseDomain default via autodetection wherever possible.
  update: implemented via operator: basedomain autodetect #204
• where no auto-detection available, the operator should react with an error state visible in .status
• at this state no controller or router should be created, and the operator should error and stop, waiting for baseDomain to be set.