This adds a new context.Context argument to the Backend.Workspaces method,
updates all of the implementations to match, and then updates all of the
callers to pass in a context.
A small number of callers don't yet have context plumbed to them so those
use context.TODO() as a placeholder for now, so we can more easily find
and fix them in later commits once we have contexts more thoroughly
plumbed.
Signed-off-by: Martin Atkins <mart@degeneration.co.uk>
This is part of a general effort to move all of Terraform's non-library
package surface under internal in order to reinforce that these are for
internal use within Terraform only.
If you were previously importing packages under this prefix into an
external codebase, you could pin to an earlier release tag as an interim
solution until you've make a plan to achieve the same functionality some
other way.
