fix log: print suite-run separator in proper place

error was introduced by 0ffb41440661631fa1d520c152be4cf8ebd4c46b
'Add JUnit XML reports; refactor test reporting'

Change-Id: I9acf1a840277979a19a2019c69e4562ff7fe2ca0
diff --git a/src/osmo_gsm_tester/trial.py b/src/osmo_gsm_tester/trial.py
index fba473f..ab16efd 100644
--- a/src/osmo_gsm_tester/trial.py
+++ b/src/osmo_gsm_tester/trial.py
@@ -188,6 +188,7 @@
     def run_suites(self, names=None):
         self.status = Trial.UNKNOWN
         for suite_run in  self.suites:
+            log.large_separator(self.name(), suite_run.name())
             st = suite_run.run_tests(names)
             if st == suite.SuiteRun.FAIL:
                 self.status = Trial.FAIL