Ansible docker_container module doesn't support gcplogs log driver yet

[isaacliao]

Docker GCP log driver doc: https://docs.docker.com/engine/admin/logging/gcplogs/

Ansible docker_module doc: https://docs.ansible.com/ansible/docker_container_module.html

Here's the error:

TASK [Start a MySQL database container] ****************************************
fatal: [10.4.20.5]: FAILED! => {"changed": false, "failed": true, "msg": "value of log_driver must be one of: json-file,syslog,journald,gelf,fluentd,awslogs,splunk, got: gcplogs"}
	to retry, use: --limit @/home/iliao/.loom/playbooks/gcloud_start_server.retry

[isaacliao]

Submitted a pull request to Ansible: ansible/ansible#22433

[isaacliao]

Obsolete since we're now using Fluentd as the logging layer. Docker logs to Fluentd, and Fluentd can be configured to log to Stackdriver Logging in Google Cloud.