Update ConfigureTest to use SettingsTestHelpers (#310)
Update ConfigureTest to use SettingsTestHelpers (#310)

This updates `Wallaby.Phantom.ConfigureTest` to use the
SettingsTestHelpers. It removes the environment reset logic from the
test and makes it easier to focus on the purpose of the tests.
aaronrenner/wallaby,keathley/wallaby,keathley/wallaby,aaronrenner/wallaby