Align suite/test teardown/setup

+ Phase II - aligning FUNC/PERF setup.
  + 2n/3n compatibility of suite setup.
  + Same structure of testcase for DEV/PERF.
  + DEVICE tests are now running VPP startup config in same
    way as PERF.
  + DEVICE is using COREKEEPER!
- DEVICE tests are running topology compute twice for backward
  compatibility. TODO to remove.
- Still phase III needed to align TAGS, LIBRARIES and remove OLD
  setup phase.

Change-Id: Ib6e1b0ebf4abebf3cbe73b4fda5cac953c2a7270
Signed-off-by: Peter Mikus <pmikus@cisco.com>