Better AutoYaST import support

[imobachgs]

• Extend the converter to read some missing sections: networking, language, keyboard, timezone, and suse_register.
• Document how supported sections are handled, including what is missing.
• Improve test coverage.

Tasks

• Read and document the networking section
• Read and document the language section
• Read and document the keyboard section
• Read and document the timezone section
• Read and document the suse_register section

[coveralls]

coverage: 70.362% (+0.5%) from 69.873%
when pulling c324d4c on autoyast-import
into 6443351 on master.

[jreidinger]

NP, just matter of taste, but I would write it in more easier way for extend like:

READERS = ["user", "root", "software", ... ] # extend list to add support for more sections
def export_profile(profile)
  READERS.each_with_object({}) do |section, result|
    require "agama/autoyast/#{section}_reader}"
    klass = "#{section}_reader".split("_").map(&:capitalize).join
    reader = Agama::AutoYaST.get_const(klass).new(profile)
    result.merge(reader.read)
   end
end

this way it is really just single line to extend it with new section as opposite to current code which require change in three places.

[jreidinger]

btw I can even reduce it to no line in converter if we have something like agama/autoyast file that contain all classes and then filter it by known readers.

[imobachgs]

Good point! I decided to go with the READERS variable approach because it is more explicit.