Set log level for datadog agent

[n0ts]

Hi, I use ansible datadog_callback.yml plugin.

Usually plugin output datadog-agent's info level to ansible.log.
Like this.

2017-06-12 16:16:54,344 requests.packages.urllib3.connectionpool https://app.datadoghq.com:443 "POST /api/v1/events?api_key=key HTTP/1.1" 202 336
2017-06-12 16:16:54,344 datadog.api 202 POST https://app.datadoghq.com/api/v1/events (673.3ms)

I fixed output only warning level.

Thanks,

[n0ts]

Could you review it?

[hush-hush]

Hi @n0ts,

Thanks a lot for the PR and sorry for the very long response time.