Scaleway inventory: allows to connect via private IP (#44342)
Scaleway inventory: allows to connect via private IP (#44342)

* scaleway inventory: remove useless duplicate

* scaleway inventory: allows to connect using private ip

ansible_host was hardcoded and it was not possible to connect using
private addresses.
This allows to define multiple host variables, values are templates
which can use hosts details send by API. For example this config file
use private address and defines two variables:

    plugin: scaleway
    hostnames:
      - hostname
    variables:
      ansible_host: private_ip
      state: state
      image: image.name
    regions:
      - ams1

inventory will looks like:

    {
        "_meta": {
            "hostvars": {
                "testhost": {
                    "ansible_host": "10.1.1.1",
                    "arch": "x86_64",
                    "commercial_type": "START1-M",
                    "hostname": "testhost",
                    "id": "af669464-0c74-4c89-8573-9fe763028448",
                    "image": "CentOS 7.4",
                    "organization": "2cc9a115-380d-4ac0-ba4b-8947eee71325",
                    "public_ipv4": "163.172.1.1",
                    "public_ipv6": "2001:bc8::1",
                    "state": "running",
                    "tags": [
                        "testtag"
                    ]
                }
            }
        },
        [...]
    }

thaim/ansible,thaim/ansible