Protecting VmsSubscriberManager with the future annotation and future flag.

Needed to move the FeatureConfiguration.java from service to car-lib
because it is used in Car.java

This is a post-O feature.

Bug: b/34976096
Test: Build with TARGET_USES_CAR_FUTURE_FEATURES set to true and to false.

Change-Id: I25848a0bfe6a6d59181dde48399fd2e1e8f10e4c
10 files changed