Remove states:   plex_reviving (now we revive subdisks)   drive_coming_up (never happened)
Remove states:
  plex_reviving (now we revive subdisks)
  drive_coming_up (never happened)

Add state sd_reviving.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase