feat(local): use Nomad's internal service discovery

[adamreese]

Add support for using Nomad's internal service discovery. This feature depends on nomad v1.3 https://www.nomadproject.io/docs/job-specification/service#provider

Depends on https://github.com/deislabs/hippo/pull/980

Signed-off-by: Adam Reese [email protected]

[lann]

Red flavored diffs are the best diffs