Add ability to read playbook from Consul

[alexanderdean]

No description provided.

[jbeemster]

Could you expand on how exactly this functionality should work @alexanderdean?

[jbeemster]

Notes:

• Client: https://github.com/hashicorp/consul/tree/master/api
• CLI Arg: -consul http://localhost:8500
• Get playbooks/sql from the Consul KV Store
  • https://www.consul.io/intro/getting-started/kv.html

[andrioni]

Although using the Consul Golang client is quite easier and probably more stable, a generic REST "playbook provider" would be an incredibly nice thing to have (although it might be borderline scope creep).

[alexanderdean]

Interesting idea @andrioni - feel free to create another ticket for this with how you think it could work!