Specification Repository Backlog Refactor

This specification proposes the refactoring of the `sahara-specs`
repository to inform a new workflow for backlogged features. This
new workflow will increase the visibility of specifications that
have been approved but which require implementation.

Change-Id: I9ac043e24ba05cb9f533f6810f5acafe14f967bb
Partial-Implements: blueprint add-backlog-to-specs
Merge "Specification Repository Backlog Refactor"