zsh completion support

[Bhaavan Merchant]

ubuntu-bug from terminal supports bash completion.
I request support for zsh too which it currently lacks.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: apport 2.9.2-0ubuntu8
ProcVersionSignature: Ubuntu 3.8.0-19.30-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
NonfreeKernelModules: nvidia
ApportLog:

ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
CrashReports: 640:1000:110:27477549:2013-06-02 14:27:16.963473320 +0530:2013-06-02 14:27:17.963473320 +0530:/var/crash/_usr_bin_compiz.1000.crash
Date: Thu Jun 6 01:39:17 2013
InstallationDate: Installed on 2013-05-12 (24 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: apport
UpgradeStatus: No upgrade log present (probably fresh install)

[Marcus Tomlinson (marcustomlinson)]

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

[Launchpad Janitor (janitor)]

[Expired for apport (Ubuntu) because there has been no activity for 60 days.]