NetworkManager: various OWE improvements
This PR improves Networkmanagers OWE support in multiple aspects.
- Remove possibility for downgrade attacks by enforcing OWE for Enhanced Open connection-profiles
- Distinguish OWE from OWE-TM BSS in nmcli
- Handle OWE-TM BSS as compatible to Open profile. This ensures profiles will continue to work after switching a Open BSS to OWE-TM.