CI: transform testimage reports into JUnit XML reports

Using resulttool we can transform the oeqa JSON reports into JUnit XML,
which GitLab can display in pipelines and merge requests.

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

ci/junit.sh

@@ -0,0 +1,15 @@
+#! /bin/bash
+
+# $ ci/junit.sh <build directory>
+#
+# If there is a OEQA test report in JSON format present in the build directory,
+# transform it to JUnit XML using resulttool.
+
+set -e -u
+
+BUILDDIR=$1
+JSON=$BUILDDIR/tmp/log/oeqa/testresults.json
+
+if test -f $JSON; then
+    resulttool junit $JSON
+fi