Adding a meta inventory to query multiple cloud accounts.

This seems to only cleanly merge the top level keys and values. We need this to be recursive so that all keys and values are merged cleanly.

For instance, this seems to break _meta, as the keys under _meta are 2 or 3 layers deep, which won't be merged cleanly.

Correct me if I'm wrong, it just doesn't seem to be taking that into account.