netboot/mini.iso should allow Ubuntu Minimal desktop Installation

[Norbert]

Steps to reproduce:
1. Download netboot/mini.iso for Ubuntu 18.04 LTS ( http://cdimage.ubuntu.com/netboot/bionic/ )
2. Launch installer.
3. Wait for "Software selection" to be shown

Expected results:
user is able to select Ubuntu minimal desktop

Actual results:
user is unable to select Ubuntu minimal desktop

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: tasksel 3.34ubuntu11
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Feb 17 13:10:05 2019
InstallationDate: Installed on 2019-02-17 (0 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
SourcePackage: tasksel
UpgradeStatus: No upgrade log present (probably fresh install)

[Norbert (nrbrtx)]

First seen on AskUbuntu ( https://askubuntu.com/q/1118918/66509 ).

It is great that upcoming Ubuntu 19.04 has Ubuntu minimal desktop in mini.iso (or in tasksel).

[Steve Langasek (vorlon)]

The mini iso is not guaranteed to offer the complete set of features provided by the desktop installer.