**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.

{
    return std::make_unique<MergeTreeSettings>(getContext()->getReplicatedMergeTreeSettings());
}
void StorageReplicatedMergeTree::lockSharedData(const IMergeTreeDataPart & part) const
{
    if (!part.volume)
        return;
    DiskPtr disk = part.volume->getDisk();
    if (!disk || !disk->supportZeroCopyReplication())
        return;
    String zero_copy = fmt::format("zero_copy_{}", toString(disk->getType()));
    zkutil::ZooKeeperPtr zookeeper = tryGetZooKeeper();
    if (!zookeeper)
        return;
    String id = part.getUniqueId();
    boost::replace_all(id, "/", "_");
    String zookeeper_node = fs::path(zookeeper_path) / zero_copy / "shared" / part.name / id / replica_name;
    LOG_TRACE(log, "Set zookeeper lock {}", zookeeper_node);
    
    
    for (int attempts = 5; attempts > 0; --attempts)
    {
        try
        {
            zookeeper->createAncestors(zookeeper_node);
            zookeeper->createIfNotExists(zookeeper_node, "lock");