Merge pull request #14865 from taosdata/test/nonzero_exit_code

ci: explicitly exit 0

tests/parallel_test/run_case.sh

@@ -65,6 +65,7 @@ ulimit -c unlimited
 
 $TIMEOUT_CMD $cmd
 RET=$?
+echo "cmd exit code: $RET"
 
 if [ $RET -ne 0 ]; then
     pwd

tests/system-test/test.py

@@ -370,3 +370,4 @@ if __name__ == "__main__":
                     tdLog.info("not need to query")
     if conn is not None:
         conn.close()
+    sys.exit(0)