Clickhouse: Table schema.ibis_clickhouse_metadata_randomcode doesn't exist. (UNKNOWN_TABLE)

[rara011088]

Original Issue here: #1596

Workaround:

1. Create a new file __init__.py in path ibis-server/app/custom_ibis/backends/clickhouse and add the imports
   from ibis import util
from ibis.backends.clickhouse import Backend
2. Create a custom function custom_get_schema_using_query to replace ibis-project function _get_schema_using_query
3. Modify the original raw_sql with "ON CLUSTER 'cluster_name'" for both CREATE and DROP statements
4. Add the line Backend._get_schema_using_query = custom_get_schema_using_query
5. Modify the file clickhouse.py by adding import
   import types
from app.custom_ibis_backends.clickhouse import custom_get_schema_using_query
6. Edit __init__ function by adding line
   self.connection._get_shcema_using_query = types.MethodType(custom_get_schema_using_query , self.connection)