Feature #10369: qa-suite: detect unexpected MDS failovers and daemon crashes
qa/tasks: update thrasher design
3 - minor
Pull request ID:
- Make the Thrasher class abstract by adding _do_thrash abstract function.
- Change OSDThrasher, RBDMirrorThrasher, MonThrasher and MDSThrasher (maybe RSync too) to inherit from the template Thrasher and implement the abstract functions.
- Check thrash_pool_snaps and create a new class for it.
- Update the thrashers to follow the similar design - some has start/_run and some calls spawn.
- rename thrashosds.py to osd_thrash.py
- Move the OSDThrasher class from ceph_manager.py to osd_thrash.py