CI: expose test results as junit

This allows Gitlab to show a detailed test report in a human friendly
manner on a merge request page.

The junit output depends on Meson 0.55, but Meson in CI is bumped to the
latest release on Feb 15th. It is beneficial to use the newest
possible Meson in CI even if we do not require it, so that we benefit
from fixes, e.g. new warnings about accidentally using more recent
Meson features than our minimum Meson version supports.

Meson 0.57 is required for proper test names in the Gitlab report after
switching the tests to TAP. See:
https://github.com/mesonbuild/meson/issues/8316

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>

.gitlab-ci.yml

@@ -20,7 +20,7 @@ stages:
   variables:
     FDO_DISTRIBUTION_VERSION: buster
     FDO_DISTRIBUTION_EXEC: 'bash .gitlab-ci/debian-install.sh'
-    FDO_DISTRIBUTION_TAG: '2020-09-30.0'
+    FDO_DISTRIBUTION_TAG: '2021-02-15.0'
 
 
 container_prep:
@@ -79,6 +79,8 @@ container_prep:
     - build-*/meson-logs
     - build-*/weston-virtme
     - prefix-*
+    reports:
+      junit: build-*/meson-logs/testlog.junit.xml
 
 .build-native-meson-no-test:
   extends: .build-native

.gitlab-ci/debian-install.sh

@@ -94,7 +94,7 @@ apt-get -y --no-install-recommends install \
 apt-get -y --no-install-recommends -t buster-backports install \
 	freerdp2-dev
 
-pip3 install --user git+https://github.com/mesonbuild/meson.git@0.49
+pip3 install --user git+https://github.com/mesonbuild/meson.git@0.57.0
 export PATH=$HOME/.local/bin:$PATH
 # for documentation
 pip3 install sphinx==2.1.0 --user