Move the S3 State from a legacy remote state to an official backend.
This increases test coverage, uses a set schema for configuration, and
will allow new backend features to be implemented for the S3 state, e.g.
"environments".
- add remote state provider backed by Joyent's Manta
- add documentation of Manta remote state provider
- explicitly check for passphrase-protected SSH keys, which are currently
unsupported, and generate a more helpful error (borrowed from Packer's
solution to the same problem):
https://github.com/mitchellh/packer/blob/master/common/ssh/key.go#L27
This is a rework of pull request #6213 submitted by @joshuaspence,
adjusted to work with the remote state data source. We also add
a deprecation warning for people using the unsupported API, and retain
the ability to refer to "_local" as well as "local" for users in a mixed
version environment.
Rework devcamcar's OpenStack Swift remote [pull
request](https://github.com/hashicorp/terraform/pull/942) to work with
Terraform's new `state/remote` and Gophercloud's current implementation.
`Get()` changed up a bit from devcamcar's version (using different
Gopercloud functionality resulted in less fussing around to figure out
the error case).
Otherwise this is a transliteration/remix of his ideas.
James Bardin