This commit introduces dummy classes for all states
that will be utilized in the new USM API. The implementation
of these classes will be addressed in subsequent commits.
Test Plan:
1. Perform an upgrade-strategy with use_usm=True
- Check software orchestration will be called.
- All states will execute and only move to the next state
- Check the usm states tests pass.
Story: 2010676
Task: 48153
Change-Id: I3d2c236656d5caee6a4a827d03146e6c160103aa
Signed-off-by: Hugo Brito <hugo.brito@windriver.com>