Add Puppet HTTP service

Implement a :puppet http service with methods for:

GET /puppet/v3/node

POST /puppet/v3/catalog

PUT /puppet/v3/facts

Node

Accepts name, environment, configured_environment, transaction_uuid parameters.

Catalog

Accepts name, environment, facts, facts_format, transaction_uuid, job_uuid, static_catalog, checksum_type parameters.

Facts

Accepts name, environment, facts, transaction_uuid parameters.