Configuring dovecot-core is missing

Mile stone: Cosmic Daily
Product: Ubuntu Server amd64
Test case : Install (Mail server) in Ubuntu Server amd64 in Cosmic Daily

Description: While installing this image http://cdimage.ubuntu.com/ubuntu-server/daily/20180724/cosmic-server-amd64.iso these steps (At Configuring dovecot-core select "Yes") and (At Configuring dovecot-core verify the hostname is "localhost" and select "Continue") were missing.

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: debian-installer (not installed)
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
Uname: Linux 4.15.0-23-generic x86_64
ApportVersion: 2.20.10-0ubuntu5
Architecture: amd64
Date: Tue Jul 24 21:25:18 2018
InstallationDate: Installed on 2018-07-24 (0 days ago)
InstallationMedia: Ubuntu-Server 18.10 "Cosmic Cuttlefish" - Alpha amd64 (20180724)
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub
 Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: VMware, Inc. VMware Virtual Platform
MemoryUsage:
 total used free shared buff/cache available
 Mem: 2160688 253188 1535816 924 371684 1746364
 Swap: 969960 0 969960
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_IE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-23-generic root=UUID=a7646b14-793d-4b07-a87d-50c78fde2f1b ro
SourcePackage: debian-installer
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/02/2015
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: 6.00
dmi.board.name: 440BX Desktop Reference Platform
dmi.board.vendor: Intel Corporation
dmi.board.version: None
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 1
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd07/02/2015:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A:
dmi.product.name: VMware Virtual Platform
dmi.product.version: None
dmi.sys.vendor: VMware, Inc.