Refactor specs

 Use fully qualified names

Change-Id: I740742cd1a87ef894c659e84c6b469db487a2f71
Bump eventmachine to 1.0.0

This change is incompatible with ruby 1.9.2
Migration to ruby 1.9.3 is required

Change-Id: Ic806cdbe8ea5c280e59889aca368fba8cf086033
bulk API retry logic
Update README.md
fix: bulk_api loop duration calculation
fix: bulk: refresh credentials
fix queing key for start messages

[fixes #43512503]
Return droplet state over nats.

Listen to and respond to request `healthmanager.droplet` with a json
object containing all healthmanager data about the droplet.

The request message format is:

topic: healthmanager.droplet
payload: { "droplets" => [<droplet_id> , ... ] }

Intended for exploration/debugging.