Fetch pipeline configuration from configuration URLs

[d-led]

Problem

GoCD can dynamically configure pipelines from configuration repositories via plugins, such as gocd-yaml-config-plugin and gocd-json-config-plugin. Without the pipeline configuration from these URLs the analysis is incomplete. It is to be expected that configuration errors may hide in such distributed configuration.

Task

Use the Rest client (see #2) to fetch the JSON or YAML configuration from the repositories and add the configuration to the GoCD model before analysis