Plugins and changes needed for Reach to start running automation

[tawalton]

This is a list of changes and new work that needs to be completed in order for Reach to be able to run existing automation against mimic.

• DNS plugin
  • https://developer.rackspace.com/docs/cloud-dns/v1/developer-guide/#list-ptr-records
  • This can return an empty list for now
• Volumes plugin
  • https://developer.rackspace.com/docs/cloud-block-storage/v1/developer-guide/#list-volumes
  • This can just return an empty list for now
• Networks plugin
  • https://developer.rackspace.com/docs/cloud-networks/v2/developer-guide/#retrieve-list-of-networks
  • This can just return an empty list for now
• Glance plugin
  • https://developer.rackspace.com/docs/cloud-images/v2/developer-guide/#list-images
  • This has to handle request arguments (including member_status, visibility, limit), https://github.com/tawalton/mimic/blob/master/mimic/rest/glance_api.py#L88-L122
• Support plugin
  • This is an internal api. We need to figure out how to handle internal api separate from mimic
• core.py
  • MimicCore init, https://github.com/rackerlabs/mimic/blob/master/mimic/core.py#L50-L51, the random_hex_generator will have to be refactored so reach can successfully map an url for internal api support

[BenjamenMeyer]

Perhaps for the core.py entry, a better solution may be to convert from having the internal APIs use the random_hex_generator at all, and make a variant of the ExternalApiStore (from #614) for Internal APIs - or rather, just register all the internal APIs as templates with an ExternalApiStore and then enable them by default. There is no enforcement over what the Service-ID should be; docs suggest as UUID. Reach shouldn't be reliant on the values any way to look up services.