gitlab: include all junit XML files from meson

gitlab: include all junit XML files from meson

The junit XML file produced by meson does not always have the
name 'testlog.junit.xml' - in the case of 'make check-functional'
there is a 'testlog-thorough.junit.xml' file too.

Improve CI debugging robustness by capturing all junit files that
meson produces.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-ID: <20250908190901.3571859-4-berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>