* Mounting /system and /vendor partitions is handled in kernel now,
   however removing the entries from fstab caused issues building
   the OTA. The workaround was to have a separate fstab, but turns out
   that simply setting the recoveryonly flag does the trick because
   those are then ignored during a normal Android boot.

Change-Id: I4dec55a9e64d21f04d88b8664a58ce054e6e682c