nomad

Description

With the changes introduced in #227, Noma API calls for job scaling operations were updated to permit stale reads. We should update the remainder of Nomad API calls for consistency and decreased load on the Nomad Servers.

Including:

• IP Address in octet format (currently, the host name is something obscure like "ip-10-123-123-123" which is not nice to work with
• EC2 Instance ID

Retrieve it from the instance metadata.