fix ydb/tests/olap/ttl_tiering build (#15673)

Author: zverevgeny

.github/config/muted_ya.txt

@@ -150,7 +150,6 @@ ydb/tests/olap/ttl_tiering sole chunk chunk
 ydb/tests/olap/ttl_tiering ttl_delete_s3.py.TestDeleteS3Ttl.test_data_unchanged_after_ttl_change
 ydb/tests/olap/ttl_tiering ttl_delete_s3.py.TestDeleteS3Ttl.test_ttl_delete
 ydb/tests/olap/ttl_tiering ttl_unavailable_s3.py.TestUnavailableS3.test
-ydb/tests/olap/ttl_tiering unstable_connection.py.TestUnstableConnection.test
 ydb/tests/postgres_integrations/go-libpq [docker_wrapper_test.py] chunk chunk
 ydb/tests/postgres_integrations/go-libpq docker_wrapper_test.py.test_pg_generated[Test64BitErrorChecking]
 ydb/tests/postgres_integrations/go-libpq docker_wrapper_test.py.test_pg_generated[TestArrayValueBackend]

ydb/tests/olap/ttl_tiering/data_correctness.py

@@ -1,6 +1,7 @@
 import time
 import logging
-from .base import TllTieringTestBase, ColumnTableHelper
+from .base import TllTieringTestBase
+from ydb.tests.olap.common.column_table_helper import ColumnTableHelper
 import ydb
 import concurrent
 import random

ydb/tests/olap/ttl_tiering/data_migration_when_alter_ttl.py

@@ -1,6 +1,7 @@
 import time
 import logging
-from .base import TllTieringTestBase, ColumnTableHelper
+from .base import TllTieringTestBase
+from ydb.tests.olap.common.column_table_helper import ColumnTableHelper
 from ydb.tests.library.common.helpers import plain_or_under_sanitizer
 
 from ydb.tests.library.test_meta import link_test_case

ydb/tests/olap/ttl_tiering/ttl_delete_s3.py

@@ -1,7 +1,7 @@
 import time
 import logging
-from .base import TllTieringTestBase, ColumnTableHelper
-
+from .base import TllTieringTestBase
+from ydb.tests.olap.common.column_table_helper import ColumnTableHelper
 from ydb.tests.library.test_meta import link_test_case
 
 logger = logging.getLogger(__name__)

ydb/tests/olap/ttl_tiering/ttl_unavailable_s3.py

@@ -4,8 +4,8 @@
 import time
 import logging
 
-from .base import TllTieringTestBase, ColumnTableHelper
-
+from .base import TllTieringTestBase
+from ydb.tests.olap.common.column_table_helper import ColumnTableHelper
 from ydb.tests.library.test_meta import link_test_case
 
 logger = logging.getLogger(__name__)

ydb/tests/olap/ttl_tiering/unstable_connection.py

@@ -1,6 +1,7 @@
 import time
 import logging
-from .base import TllTieringTestBase, ColumnTableHelper
+from .base import TllTieringTestBase
+from ydb.tests.olap.common.column_table_helper import ColumnTableHelper
 import ydb
 import concurrent
 import random