Idea: support provisioning alerts

[yaroot]

Knowing this is primary a tool for provisioning dashboards, I think it would be also great to also support alerts.

Edit: Seems there can be alerts in the dashboard but I'm getting could not delete previous alerts for dashboard when applying alert

[D0ppler-Effect]

I can see that only the "Classic condition" alerts can be provisioned right now, which basically removes the handy multi-dimensional alerts support.

Please, correct me if I'm wrong, @K-Phoen :)