Merge pull request #2 from akhayrutdinov/BACKLOG-1495

[BACKLOG-1562] Add support for ACL shadow nodes in repository
[BACKLOG-1564] - Change current datasource creation endpoints to allow ACL configuration

use helper method for importers
Merge pull request #3 from aliakseihaidukou/BACKLOG-1495

[BACKLOG-1564] - Change current datasource creation endpoints to allow A...
[BACKLOG-1562] Add support for ACL shadow nodes in repository
- shadow nodes are created properly