**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 (parts_to_add.empty() && 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 empty set", parts_to_remove.size(), parts_to_remove_str);
        }
    }
    if (parts_to_add.empty())
    {
        LOG_INFO(log, "All parts from REPLACE PARTITION command have been already attached");
        tryRemovePartsFromZooKeeperWithRetries(parts_to_remove);
        return true;
    }
    if (parts_to_add.size() < all_parts.size())
    {
        LOG_WARNING(log, "Some (but not all) parts from REPLACE PARTITION command already exist. REPLACE PARTITION will not be atomic.");
    }
    StoragePtr source_table;
    TableLockHolder table_lock_holder_src_table;
    StorageID source_table_id{entry_replace.from_database, entry_replace.from_table};
    auto clone_data_parts_from_source_table = [&] () -> size_t
    {
        source_table = DatabaseCatalog::instance().tryGetTable(source_table_id, getContext());
        if (!source_table)
        {