[yocto] Replace netbase with connman

[Marc Ferland]

Hi,

I'm trying to replace netbase from my image with connman and I need help
on how to proceed. So far I see that:
- udev includes some event scripts that bring up interfaces
- netbase is included by default in core-image (which I use).

Should I remove both the udev scripts and netbase from my image and just
install connman?

So far I successfully removed the udev scripts with a bbappend to udev
but I don't know how to remove netbase from the 'core-boot' task.

Also, will connman work when booting with nfsroot?

Thanks,

Marc