**Describe the issue**
ClickHouse is unable to start up after upgrading from 20.8 to 21.8. 

There is a replicated table with `:` in zk path and it couldn't be loaded with:

`2021.09.15 03:49:58.435071 [ 633075 ] {} <Error> Application: DB::Exception: Unknown auxiliary ZooKeeper name '/test_prefix'. If it's required it can be added to the section <auxiliary_zookeepers> in config.xml: Cannot attach table `db1`.`table1` from metadata file /var/lib/clickhouse/metadata/db1/table1.sql from query ATTACH TABLE db1.table1 (`field1` String, `date` Date) ENGINE = ReplicatedMergeTree('/test_prefix:db1/{shard}/table1', '{replica}') PARTITION BY toMonth(date) PRIMARY KEY field1 ORDER BY field1 SETTINGS index_granularity = 8192: while loading database `db1` from path /var/lib/clickhouse/metadata/db1
`

**Expected behavior**
ClickHouse server is able to startup after upgrade without schema change. "test_prefix" in "/test_prefix:db1/{shard}/table1" is not interpreted as an auxiliary ZooKeeper name.

if (ops.size() > zkutil::MULTI_BATCH_SIZE)
            {
                zookeeper->multi(ops);
                ops.clear();
            }
        }
        
        ops.emplace_back(zkutil::makeSetRequest(dest_alter_partition_version_path, "", dest_alter_partition_version_stat.version));
        
        ops.emplace_back(zkutil::makeSetRequest(fs::path(dest_table_storage->zookeeper_path) / "log", "", -1));
        ops.emplace_back(zkutil::makeCreateRequest(fs::path(dest_table_storage->zookeeper_path) / "log/log-",
                                                   entry.toString(), zkutil::CreateMode::PersistentSequential));
        {
            Transaction transaction(*dest_table_storage);
            auto src_data_parts_lock = lockParts();
            auto dest_data_parts_lock = dest_table_storage->lockParts();
            std::mutex mutex;
            DataPartsLock lock(mutex);
            for (MutableDataPartPtr & part : dst_parts)
                dest_table_storage->renameTempPartAndReplace(part, nullptr, &transaction, lock);
            Coordination::Error code = zookeeper->tryMulti(ops, op_results);
            if (code == Coordination::Error::ZBADVERSION)
                throw Exception(ErrorCodes::CANNOT_ASSIGN_ALTER, "Cannot assign ALTER PARTITION, because another ALTER PARTITION query was concurrently executed");
            else
                zkutil::KeeperMultiException::check(code, ops, op_results);
            parts_to_remove = removePartsInRangeFromWorkingSet(drop_range, true, lock);
            transaction.commit(&lock);
        }
        PartLog::addNewParts(getContext(), dst_parts, watch.elapsed());
    }