updated debug printing

Author: Enmk

tests/clickhouse-test

@@ -2615,7 +2615,7 @@ def run_tests_array(
         proc_name = multiprocessing.current_process().name
         print(f"Running {about}{num_tests} {test_suite.suite} tests ({proc_name}).")
 
-    print('!!!!!', multiprocessing.current_process().name, '\n'.join(all_tests))
+    print('!!!!!', multiprocessing.current_process().name, f'got {len(all_tests)} tests')
 
     while True:
         if all_tests: