[WIP] change hostname transition
Merge branch 'develop' of github.com:allegro/ralph_assets into feature/hostname-transition

Conflicts:
	src/ralph_assets/models_assets.py
Update settings, fix country_id error, add migrations
Merge branch 'develop' of github.com:allegro/ralph_assets into feature/hostname-transition

Conflicts:
	src/ralph_assets/models_assets.py
Fix can_generate_hostname
Add test for change_hostname transition
Fix flake8 errors
Fix tests - change hostname transition
Remove can_generate_hostname property from Asset model
Check category has code in change hostname transition
Change hostname transition - add tests
Change related_name in TransitionsHistory model
Merge pull request #355 from quamilek/feature/hostname-transition

Change hostname transition