Pitch: How to pass kernel options with BLS

[Laura Abbott]

If you haven't seen it, there is a change to use BootloadSpec as the way
to generate entries for F30
https://fedoraproject.org/wiki/Changes/BootLoaderSpecByDefault .
One of the major impacts is that modifying kernel command line
arguments is now different and doesn't match most other guides.
I think a short article about the best way to set kernel command line
arguments with the new setup would be beneficial to users. I can
write something up and get it reviewed by the change owners (Peter
and Javier). I'll leave it to the editors to decide when would
be a good time to run this.

Thanks,
Laura