Option to create/update an artifact using template(s)

[dragoslav]

Features

• new artifact and CRUD endpoints: templates
• single or multiple (list) import references - applied sequentially, thus the second is merged on top of the first
• each import reference may contain type {type}/{name}, otherwise default type is templates, e.g. blueprints/sava:1.0, templates/sava (or just sava)

Examples

Template:

name: sava_breed
kind: template
definition:
  ports:
    webport: 8080/http
  environment_variables:
    SAVA_DEBUG: 'false'

using it:

name: sava:1.0.0
kind: breed
import: sava_breed # equivalent to templates/sava_breed

Multiple imports:

name: sava:1.0.0
kind: breed
import:
- template1
- breeds/sava:1.1 # importing from breed (non-template) artifact

Update based on an older artifact:

name: sava:1.1.0
import: breeds/sava:1.0.0 # importing 1.0.0
deployable: magneticio/sava:1.1.0 # overriding just the image