**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.

{
    std::optional<ReplicatedMergeTreeQuorumAddedParts::PartitionIdToMaxBlock> max_added_blocks = {};
    /**
     * Synchronously go to ZooKeeper when select_sequential_consistency enabled
     */
    if (select_sequential_consistency)
        max_added_blocks = getMaxAddedBlocks();
    auto lock = lockParts();
    for (const auto & part : getDataPartsStateRange(DataPartState::Committed))
    {
        if (part->isEmpty())
            continue;
        if (max_added_blocks)
        {
            auto blocks_iterator = max_added_blocks->find(part->info.partition_id);
            if (blocks_iterator == max_added_blocks->end() || part->info.max_block > blocks_iterator->second)
                continue;
        }
        func(part);
    }
}
std::optional<UInt64> StorageReplicatedMergeTree::totalRows(const Settings & settings) const