Make the service timeout and blob lifetime configurable

Add two parameter under DeviceConfig to support server-based RoR.
1. server_based_service_timeout_in_seconds
2. server_based_server_blob_lifetime_in_millis

Bug: 172780686
Test: treehugger
Change-Id: I45054e681da348a7b6ac0a9dc3ec9264faa422d5