Ansible deprecation warning for docker_container vs docker networks

[ryanjsims]

When starting the dev environment (probably other environments too) there is a deprecation warning for Ansible about docker network behavior changing in Ansible 2.12, may or may not actually be a problem but its something that needs research.

[DEPRECATION WARNING]: Please note that docker_container handles networks slightly different than docker CLI. 
If you specify networks, the default network will still be attached as the first network. (You can specify 
purge_networks to remove all networks not explicitly listed.) This behavior will change in Ansible 2.12. You 
can change the behavior now by setting the new `networks_cli_compatible` option to `yes`, and remove this 
warning by setting it to `no`. This feature will be removed in version 2.12. Deprecation warnings can be 
disabled by setting deprecation_warnings=False in ansible.cfg.