Impacts swh-indexer which will get updated to use
storage*.content_get_partition instead:
```
grep -r "content_get_range(" $SWH_ENVIRONMENT_HOME/**/swh/* | grep -v swh-storage
/home/tony/work/inria/repo/swh/swh-environment/swh-indexer/swh/indexer/indexer.py: result = self.storage.content_get_range(start, end)
/home/tony/work/inria/repo/swh/swh-environment/swh-indexer/swh/indexer/storage/interface.py: def _content_get_range(
/home/tony/work/inria/repo/swh/swh-environment/swh-indexer/swh/indexer/storage/__init__.py: def _content_get_range(
/home/tony/work/inria/repo/swh/swh-environment/swh-indexer/swh/indexer/storage/__init__.py: db.content_get_range(
/home/tony/work/inria/repo/swh/swh-environment/swh-indexer/swh/indexer/storage/__init__.py: return self._content_get_range(
/home/tony/work/inria/repo/swh/swh-environment/swh-indexer/swh/indexer/storage/__init__.py: return self._content_get_range(
/home/tony/work/inria/repo/swh/swh-environment/swh-indexer/swh/indexer/storage/db.py: def content_get_range(
```
Related to T645