Following Ezio's suggestion, force verbose mode on test_ssl to diagnose freezes on 3.x

Lib/test/test_ssl.py

@@ -1486,9 +1486,12 @@ def test_main(verbose=False):
         if thread_info and support.is_resource_enabled('network'):
             tests.append(ThreadedTests)
 
+    old_verbose = support.verbose
     try:
+        support.verbose = True
         support.run_unittest(*tests)
     finally:
+        support.verbose = old_verbose
         if _have_threads:
             support.threading_cleanup(*thread_info)