Cleanup sample config

The sample config file had some options that were set rather than
documenting the defaults.

Change-Id: I53abba01b3683f3ad9c81d824ccf0b63c016dc87
Do not call deprecated functions

When getting a token using v3 API, a deprecated warning was logged
because the process wound up calling identity_api.get_domain.

The server shouldn't be using deprecated APIs.

Change-Id: I5b6e1aad6db9677abee04ff88c739722f358e386
Merge "Do not call deprecated functions"
Merge "Cleanup sample config"