Migrate to TelecomStatsLog from StatsLog

As part of statsd becoming a Mainline module in R, autogenerated
StatsLog.write() calls are going away and replaced by *StatsLog.java
that is autogenerated for each module.
This CL adds autogenerated TelecomStatsLog and replaces usages
of StatsLog with TelecomStatsLog.

Bug: 145952197
Test: m
Test: atest TelecomUnitTests
Change-Id: Idd9ed343a596336b7c56b705cb521c14a7ff2716