avocado.test: Call SysInfo.end_test_hook at the end of a test

So we actually log the messages file.
Signed-off-by: NLucas Meneghel Rodrigues <lmr@redhat.com>

avocado/test.py

@@ -295,6 +295,7 @@ class Test(unittest.TestCase):
             raise exceptions.TestSetupFail(cleanup_exception)
 
         self.status = 'PASS'
+        sysinfo_logger.end_test_hook()
 
     def run_avocado(self, result=None):
         """