Add CtsNetTestCasesLatestSdk to mainline-presubmit

This is the pilot run for mainline testing in Test Mapping Suite.

For supporting mainline testing in Test Mapping Suite, developers can
run tests by configuring the TEST_MAPPING file, the 3 simple steps are:
  - Add tests to be part of general-tests suite if the test does not
    depend on a device specific features.
  - Update test configureation for TradeFed to run mainline testing.
  - Update TEST_MAPPING file with test-group as "mainline-presubmit"

It's only for postsubmit now, and will be moved to actual presubmit
once the whole mechanism is stable.

For more details about the usage, please refer to go/test-mapping-mainline-user-guide

Bug: 160753366
Test: forrest.
Change-Id: I8704cc5626a3e049eb3c27adb86e9c1a4d828273
Merged-In: I8704cc5626a3e049eb3c27adb86e9c1a4d828273
3 files changed