"config-gfarm -t -A" fails with "/usr/bin/config-gfarm: 84: .: Can't open /usr/share/gfarm/config/config-gfarm.common"

[Karl-Philipp Richter]

`config-gfarm -t -A [user]` fails with `/usr/bin/config-gfarm: 84: .: Can't open /usr/share/gfarm/config/config-gfarm.common`.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: gfmd 2.6.5.1+dfsg-1
Uname: Linux 4.3.3-040303-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Tue Mar 1 22:23:06 2016
InstallationDate: Installed on 2015-04-20 (316 days ago)
InstallationMedia: Ubuntu-Server 14.10 "Utopic Unicorn" - Release amd64 (20141022.2)
ProcEnviron:
 TERM=screen
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: gfarm
UpgradeStatus: Upgraded to wily on 2015-10-26 (127 days ago)