As per the TODO, merge EthernetServiceTests into the larger
FrameworksNetTests suite.
Similarly to NetworkStats, NSD or IpSec tests, the tests are also marked
as "non-connectivity-module-test", where "module" actually refers to
modules being built for release (from an S-based branch) today. This is
necessary as the tests and associated code cannot build without T APIs.
Also add FrameworksNetTests to presubmit as non-connectivity-module
tests are not run in presubmit without this.
Test: TH
Merged-In: Id533cdb4ac184b963f570af299dea04754ba88e9
Change-Id: I9950fcb49fdc2217134a59e993941cbe5da0b556
40da62da48