log passed tests

In the end of a test suite, do not omit the passed tests. For example,
running handover against N BTS combinations, it was hard to summarize
which BTS models actually succeeded, with only the failures listed.

Besides the "FAIL" listings, now print something like this in the end:

 PASS: handover:sysmo+secondbts-trx-b200 (pass: 1)
     pass: handover.py (198.8 sec)
 PASS: handover:sysmo+secondbts-trx-umtrx (pass: 1)
     pass: handover.py (192.7 sec)
 PASS: handover:trx-b200+secondbts-trx-umtrx (pass: 1)
     pass: handover.py (193.1 sec)

Change-Id: Ib85a5b90e267c2ed2f844691187ecadc8939b1bb
diff --git a/src/osmo_gsm_tester/core/report.py b/src/osmo_gsm_tester/core/report.py
index d2c68c5..c3390fe 100644
--- a/src/osmo_gsm_tester/core/report.py
+++ b/src/osmo_gsm_tester/core/report.py
@@ -164,12 +164,14 @@
     return testcase
 
 def trial_to_text(trial):
+    suite_passes = []
     suite_failures = []
     count_fail = 0
     count_pass = 0
     for suite in trial.suites:
         if suite.passed():
             count_pass += 1
+            suite_passes.append(suite_to_text(suite))
         else:
             count_fail += 1
             suite_failures.append(suite_to_text(suite))
@@ -181,6 +183,7 @@
         summary.append('%d suites passed' % count_pass)
     msg = [', '.join(summary)]
     msg.extend(suite_failures)
+    msg.extend(suite_passes)
     return '\n'.join(msg)
 
 def suite_to_text(suite):