**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 (moves_executor)
            moves_executor->wait();
        if (common_executor)
            common_executor->wait();
        std::unique_ptr<SystemLogs> delete_system_logs;
        {
            auto lock = std::lock_guard(mutex);
        /** Compiled expressions stored in cache need to be destroyed before destruction of static objects.
          * Because CHJIT instance can be static object.
          */
#if USE_EMBEDDED_COMPILER
            if (auto * cache = CompiledExpressionCacheFactory::instance().tryGetCache())
                cache->reset();
#endif
            
            
            
            
            
            
            
            
            
            
            
            dictionaries_xmls.reset();
            user_defined_executable_functions_xmls.reset();
            delete_system_logs = std::move(system_logs);
            embedded_dictionaries.reset();
            external_dictionaries_loader.reset();