Support multiple sources about bridgy

[wagoodman]

@bootswithdefer I don't have multiple aws accounts to try this out on, however, the changes have passed everything else I could try out. You'll need to update your ~/.bridgy/config.yml to a list of sources to make use of this update (the old config schema is also still supported):

inventory:
  source:

    - type: csv
      name: some.csv
      fields: name, address, otherthings
      delimiter: '|'

    - type: aws
      # ~/.aws/* configs will be referenced

    - type: aws
      access_key_id: some-id
      secret_access_key: some-key
      session_token: some-token
      region: us-west-2

This way you can reference multiple aws accounts, one listed in your aws config and the other listed manually (or list them both manually, etc...).

I just uploaded v0.1.0 of bridgy that has this feature, update it and give it a shot. Open up a new issue if you discover something is amiss.

[wagoodman]

stellar idea, I'll take a closer look at that tonight.

At first glance the multiple inventory source seems like a low level of effort, however, duplicating source types (such as multiple AWS accounts) may need a larger refactor. I can probably make an InventorySet object that combines multiple inventory sources (irregardless of type) but that wouldn't solve the configuration object, which only knows about one instance of each inventory type --the config will most likely need to be modified to accept a list of various inventory sources instead of a map.