FcZoneSharingMode specifies how to deal with FC zones managed by UCS and by an external Fibre
Channel switch: (1) coalesce - UCS-managed zones and zone sets are combined with externally
managed zones. UCS Manager does not remove zones and zones sets that have been configured
externally. (2) clear-unmanaged-zone-all - UCS Manager should delete both active and non-active
zones and zones sets that have been configured externally. FC zones managed by UCS are not removed.
If the Fabric Interconnect is connected to an upstream Fibre Channel switch, any zone removal will
propagate throughout the fabric.