multinode documentation for insecure registry on Ubuntu

[Robert Duncan]

there is some confusion with running an insecure docker registry on Ubuntu in the documentation for Multinode

https://docs.openstack.org/kolla-ansible/latest/user/multinode.html

the directions are to
1. check if Ubuntu is configured with upstart or systemd
2. ensure it's configured for systemd
3. edit /etc/default/docker
4. edit /etc/systemd/system/docker.service
5. reload daemon, reload docker service

However, it doesn't work on Ubuntu 16.04 - the actual docker documentation for running an insecure registry is like so

1. create the file /etc/docker/daemon.json
2. add the entry for the insecure registry e.g.
{
  "insecure-registries" : ["myregistrydomain.com:5000"]
}
3. reload systemd daemon, reload docker service

should be performed on all docker hosts.

[Robert Duncan (rduncan-t)]

updated project from kolla to kolla-ansible

[Benjamin Diaz (benjamin.diaz)]

At least in the master branch, the docker insecure registry configuration is done automatically during the bootstrap-servers play. You can find it in ansible/roles/baremetal/tasks/post-install.yml, in the 'Configure docker service' task.

In summary, there should be no need for the user to configure this manually. Documentation should be updated to reflect this.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/574702

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Michal Nasiadka <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/kolla-ansible/+/574702
Reason: No updates since 2018