tempest: rework gabbi setup

The current approach is a bit hacky and create one
tempest scenario per gabbi HTTP call.

The side effect is that tests continue to run even the previous
one have fail.

This changes the approach by running gabbi to have one scenario
per yaml file from tempest point of view.

This will make easier to debug the scenario in case of failure.

Change-Id: I594288322d9ac5d3d128d601cba1d2291a632e20
3 files changed
tree: e2eccdd78b2b0531e231040e5cf7c1e05154c9f1
  1. ceilometer/