[RFC] Improving the Anaconda CLI help

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When working on improving our built-in CLI option help I found
some topics I think could stand some feedback and/or discussion,
here they go:

* The help texts are currently printed one after another without any
padding, creating a huge wall-of-text-column on the right side of the
screen.
Do we want to add some white space or other formatting between them and
will optparse be able to do that ? One possible downside is that it will
make the already long help output even longer.

* Some options might make sense/work only in
netinst/liveinst/dirinst/imageinst/etc. or even mean different things in
different modes. The question is - what to do about this ?
Should each option have an indication in what mode it should be used ?

One other solution would be to group the options to groups, say a group
for all options specific to an installation mode and a group for
multi-use options. For example the firewall-cmd command --help work like
this.

Another possible solution would be to just print options relevant to
CLI use-cases. On the other hand this would prevent people from using
their locally installed Anaconda as a reference for Anaconda boot
options.

* man page ! I think would not be difficult to generate a useful
anaconda man-page from the anaconda_options.txt file holding the
help text. What do you think ? :)

Looking forward to your feedback!
Martin Kolman

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