In this changeset, I modified all existing Watcher objects to now
rely on oslo.versionedobjects as a base.
Change-Id: I3c9b1ca6da529d128743b99020350f28926ea1a2
Partially-Implements: blueprint watcher-versioned-objects
In watcher/tests/__init__.py has a totally unused,
misleading class so I removed it, as it is never used.
Change-Id: Ib878252453489eb3e1b1ff06f4d6b5e2b0726be5
Closes-Bug: #1549920
Each config option has limitation for type and value.
We make enforce_type=True to check whether we pass wrong type.
Also fixes a type error issue in test_db_manager.py.
Change-Id: I6e111e21588525d32b05eeba75b06583d4e605ed
Related-Bug: #1517839
