[enh] Sort alphabetically the domain list

[cyxae]

The problem

Domains are randomly displayed when running "yunohost domain list"
YunoHost/issues#1355

Solution

Sort domains alphabetically, by top domains

PR Status

...

How to test

Add many domains and subdomains
Run "yunohost domain list"

Validation

• Principle agreement 0/2 :
• Quick review 0/1 :
• Simple test 0/1 :
• Deep review 0/1 :

[cyxae]

Entre temps le fichier domain.py a changé, il faudrait donc enlever dans mon commit le "['virtualdomain'][0]" mais l'idée reste la même

[zamentur]

I suggested some change and suggest this order in which i group subdomains together following root domain. I think this order allow to groups domains correctly if there is 2 distinct communities

root@ynh:/ynh-dev# yunohost domain list
domains: 
  - juggletube.net
  - www.juggletube.net
  - nextcloud.local
  - revolution.fr
  - vive.la.revolution.fr
  - revolution.it
  - viva.la.revolution.it
  - revolution.net
  - ynh.local

[zamentur]

LGTM, tested