Use booleans instead of strings.
Now that more unit test code runs, a few other errors
were detected and fixed:
- Missing --force-password arg
- Modifying "encryption" dict's provider field was
updating the dict also stored in the mock, causing
mismatches in unit tests. Don't modify this dict,
just use/manipulate the provider arg that we need.
Change-Id: I50f426a77f389f13278a21ad7193c8bbdbd8fd7a
cd7a4da7af