[Build 20190301] openQA test fails in partitioning missing x11 pattern


most probably caused by Mesa-drivers build failure
===
[   79s] Native C++ compiler: c++ (gcc 8.2.1 "c++ (SUSE Linux) 8.2.1 20190204
[gcc-8-branch revision 268513]")
[   79s] Build machine cpu family: ppc64
[   79s] Build machine cpu: ppc64le
[   79s]
[   79s] meson.build:194:6: ERROR:  Problem encountered: Unknown architecture
ppc64. Please pass -Dvulkan-drivers to set driver options. Patches gladly
accepted to fix this.
[   79s]
[   79s] A full log can be found at
/home/abuild/rpmbuild/BUILD/mesa-18.3.4/build/meson-logs/meson-log.txt
[   79s] error: Bad exit status from /var/tmp/rpm-tmp.ZHWd8q (%build)
===

as per jobhist seems to be caused by last source change from sr
https://build.opensuse.org/request/show/677779
===
$osc jobhist -l3 openSUSE:Factory:PowerPC/Mesa-drivers standard ppc64le
time                 package                                            reason 
         code              build time      worker
2019-02-01 12:53:28  Mesa-drivers                                       meta
change      succeeded               39m 53s   obs-power8-04:2 
2019-02-05 01:37:21  Mesa-drivers                                       source
change    succeeded               36m 16s   obs-power8-03:29
2019-02-24 20:05:26  Mesa-drivers                                       source
change    failed                   1m 34s   obs-power8-03:10
===


## Observation

openQA test in scenario opensuse-Tumbleweed-DVD-ppc64le-RAID0@ppc64le fails in
[partitioning](https://openqa.opensuse.org/tests/866750/modules/partitioning/steps/1)

## Test suite description



## Reproducible

Fails since (at least) Build
[20190228](https://openqa.opensuse.org/tests/865832)


## Expected result

Last good: [20190214](https://openqa.opensuse.org/tests/854646) (or more
recent)


## Further details

Always latest result in this scenario:
[latest](https://openqa.opensuse.org/tests/latest?machine=ppc64le&arch=ppc64le&version=Tumbleweed&test=RAID0&flavor=DVD&distri=opensuse)