tempest: tell tempest our scenario are long

By default, a scenario test timeout is 500 seconds;

This is too short for the autoscaling test if Gnocchi/Ceilometer
are deployed with the default.

This change use 5*500 seconds instead.

Change-Id: Ibab4b6c1d06e26528e217fdb2753ea2c854fb6cb
1 file changed
tree: 042346ac94f8c4f396dd8185427f36c951cecea0
  1. ceilometer/