* Task table changed to reflect new schema
* Subtask table introduced
* TaskResults renamed to Workload and now contains
a bunch of separate attributes rather then fields
in dicts.
* TaskResults 'raw' data are now stored in a separate
table WorkloadData.
* Tag table introduced
* Store hooks result in workload model
Co-Authored-By: Illia Khudoshyn <ikhudoshyn@mirantis.com>
Co-Authored-By: Roman Vasilets <rvasilets@mirantis.com>
Co-Authored-By: Anton Studenov <astudenov@mirantis.com>
Change-Id: I80ac8942eec123e734bf465133397408be5ba88e
d7e45313e0