Test to encourage new settings to be backed up

This test encourages developers who add new settings to
include them in backup / restore by ensuring that either:
- the setting is included in SETTINGS_TO_BACKUP, or
- it is added to a blacklist in the test

Test: run CoreFrameworkTests
Change-Id: If8ed0afda960c0f985a492ccf12ac452c6fa114d
1 file changed