[WCM] Batch log subdir

```
Bug fix: no
Feature addition: yes
Backwards compatibility break: no
Unit test passes: yes
Behat scenarios passes: ?
Checkstyle issues: no
ChangeLog updated: no
Documentation PR: 
Fixes the following jira:
 - PIM-1735
 - PIM-1798
```
bap pr: https://github.com/laboro/platform/pull/955