Bump to passenger 4.0.8. Fix some config deprecations with v4.
Bump to passenger 4.0.8. Fix some config deprecations with v4.

NREL/api-umbrella,apinf/api-umbrella,Chuck8080/apiumbrella,apinf/api-umbrella,Chuck8080/apiumbrella,NREL/api-umbrella,apinf/api-umbrella,apinf/api-umbrella,NREL/api-umbrella,NREL/api-umbrella,apinf/api-umbrella