Create new test group to split the tests

Flicker tests are taking longer than the 30min Treehugger SLO. Introduce a new test group to reduce the flicker impact on presubmit

Bug: 197230743
Test: atest FlickerLibTest
Change-Id: I0a297d76d90b27e30e8e8f76a0e7e0a7bfcb6c9f
3 files changed
tree: 79380168699b76f47e03bd89f371f06cfefe390a
  1. build/
  2. docs/
  3. emu_test/
  4. libraries/
  5. scripts/
  6. tests/
  7. utils/
  8. PREUPLOAD.cfg