The tests in cros_sdk_unittests are VERY slow.

Can we put them being the --network command line flag? We somewhat abuse that to also include slow unittests and integration tests.

It's done by adding this decorator to each test affected.

  @cros_test_lib.NetworkTest()


You can the run the tests with:
 ./cros_sdk_unittest --network

Or
  cbuildbot/run_tests --network


The problem with this is that we never run network tests automatically. I've tried to add a PreCQ builder that would, but was blocked by unrelated issues.

If you run all of the tests with --network, you'll see that a few of them have been allowed to bitrot for this reason.