APCT-ify the netd benchmarks

These will track performance of:
 - connect(2)
 - getaddrinfo(3)
 - gethostbyname(3)

And by extension the impact of network logging in NONE, METRICS, or
FULL mode for regression monitoring and similar varieties of
entertainment.

Bug: 29748723
Test: ( mma -j30 netd/tests/benchmarks && adb push ${OUT}/data/benchmarktest/netd_benchmark /data/benchmarktest && /data/benchmarktest/netd_benchmark )
Change-Id: I4cabbf1b754d5d9f40e3de448bf7c78843ad6519