Fix flaky 00157_cache_dictionary

+ disable paralell replicas on insert to avoid hitting
  `max_estimated_execution_time` setting

tests/queries/1_stateful/00157_cache_dictionary.sql

@@ -10,7 +10,7 @@ SAMPLE BY intHash32(UserID)
 SETTINGS storage_policy = 'default';
 
 INSERT INTO test.hits_1m SELECT * FROM test.hits LIMIT 1000000
-    SETTINGS min_insert_block_size_rows = 0, min_insert_block_size_bytes = 0, max_block_size = 8192, max_insert_threads = 1, max_threads = 1;
+SETTINGS min_insert_block_size_rows = 0, min_insert_block_size_bytes = 0, max_block_size = 8192, max_insert_threads = 1, max_threads = 1, max_parallel_replicas=1;
 
 CREATE DATABASE IF NOT EXISTS db_dict;
 DROP DICTIONARY IF EXISTS db_dict.cache_hits;