Adding description to server archetype

[da-ekchajzer]

Problem

In order to identify the nature of each server archetypes we should provide a small text that describe it.

Solution

v1/server/all_default_models should return the description and the identifier that will be used in the request. We could also add other attributes that describes the archetype, year for instance.

Implementation

• Add a description attribute in model
• Fill the description and year attribute in the archetype
• v1/server/all_default_models should return something like :

{
   "archetype-1": {
      "description" : "description",
      "year": 2019
   },
   "archetype-2": {
      "description" : "description",
      "year": 2019
   },
   "archetype-3": {
      "description" : "description",
      "year": 2019
   },
}