apt() needs "--abc-xyz" completions like apt-get()

[Chris Rainey]

I've switched from using "apt-get ..." to just "apt ..." for cli package management. apt-get will auto-complete an option such as "apt-get --auto..." but apt, alone, will not.

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: bash-completion 1:2.8-1ubuntu1
ProcVersionSignature: Ubuntu 4.18.0-11.12-generic 4.18.12
Uname: Linux 4.18.0-11-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.1
Architecture: amd64
CurrentDesktop: GNOME
Date: Thu Nov 15 09:43:50 2018
Dependencies:

InstallationDate: Installed on 2018-11-08 (7 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: bash-completion
UpgradeStatus: No upgrade log present (probably fresh install)