* 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.
* This removes /system entry from fstab, since this partition
is now early-mounted and the fstab entry is specified in device tree.
* At the same time, also include a fully populated fstab, in order to avoid
build breakage while generating recovery updater scripts.
Change-Id: I8e558458b984e97a45a920c3751a6b7c3f2ebc5c
