Invalid 'hosts.yaml' is generated when using multiple hosts

[seumasdunlop]

There is a missing colon at the end of the hostname in the children.kubitect_hosts.hosts section so the separate hosts are concatenated to a single host.

E.g.

  children:
    kubitect_hosts:
      hosts:
        ubuntu-1
        ubuntu-2

That generates the following error because it is trying to resolve 'ubuntu-1 ubuntu-2':
fatal: [ubuntu-1 ubuntu-2]: UNREACHABLE! => {"changed": false, "msg": "Failed to connect to the host via ssh: ssh: Could not resolve hostname ubuntu-1 ubuntu-2: Name or service not known", "unreachable": true}

Adding a trailing colon to the template fixes it. E.g.

  children:
    kubitect_hosts:
      hosts:
      {% if config.hosts is defined %}
      {% for host in config.hosts %}
        {{ host.name }}:
      {% endfor %}
      {% endif %}