Use SubscriptionId instead of SubId

Rename the methods and arguments in ServiceStateTable to use
SubscriptionId instead of SubId.

Fixes: 35766624
Test: Existing unit tests pass
Change-Id: Ic837535b431c19d952e065b742d678152afafd57
Merged-In: Ic837535b431c19d952e065b742d678152afafd57
2 files changed