This commit adds RPC calls for rescue interface.
It also adds transitions to/from the rescue-related states.
Change-Id: I12cc8c3b89588394ff10837f05dd6ad5e9b55ee7
Partial-bug: #1526449
Co-Authored-By: Jay Faulkner <jay@jvf.cc>
Co-Authored-By: Josh Gachnang <josh@pcsforeducation.com>
Co-Authored-By: Jesse J. Cook <jesse.j.cook@member.fsf.org>
Co-Authored-By: Mario Villaplana <mario.villaplana@gmail.com>
Co-Authored-By: Aparna <aparnavtce@gmail.com>
Co-Authored-By: Shivanand Tendulker <stendulker@gmail.com>