**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.

auto zookeeper = getZooKeeper();
        Transaction transaction(*this);
        Coordination::Requests ops;
        for (PartDescriptionPtr & part_desc : final_parts)
        {
            renameTempPartAndReplace(part_desc->res_part, nullptr, &transaction);
            getCommitPartOps(ops, part_desc->res_part);
            if (ops.size() > zkutil::MULTI_BATCH_SIZE)
            {
                zookeeper->multi(ops);
                ops.clear();
            }
        }
        if (!ops.empty())
            zookeeper->multi(ops);
        {
            auto data_parts_lock = lockParts();
            transaction.commit(&data_parts_lock);
            if (replace)
            {
                parts_to_remove = removePartsInRangeFromWorkingSet(drop_range, true, data_parts_lock);
                String parts_to_remove_str;
                for (const auto & part : parts_to_remove)
                {
                    parts_to_remove_str += part->name;
                    parts_to_remove_str += " ";
                }
                LOG_TRACE(log, "Replacing {} parts {}with {} parts {}", parts_to_remove.size(), parts_to_remove_str,
                          final_parts.size(), boost::algorithm::join(final_part_names, ", "));