Set LIVE_MIGRATE_BACK_AND_FORTH=True for grenade live-migration job
This makes the grenade live-migration job run live-migration
on a single instance to one compute node and then back to the
other, which is interesting in a grenade job where we have
mixed computes.
Depends-On:
# RUN_SMOKE to False in order to run live migration tests using
# grenade
export DEVSTACK_LOCAL_CONFIG="RUN_SMOKE=False"
+ # LIVE_MIGRATE_BACK_AND_FORTH will tell Tempest to run a live
+ # migration of the same instance to one compute node and then back
+ # to the other, which is mostly only interesting for grenade since
+ # we have mixed level computes.
+ export DEVSTACK_LOCAL_CONFIG+=$'\n'"LIVE_MIGRATE_BACK_AND_FORTH=True"
export BRANCH_OVERRIDE={branch-override}
export DEVSTACK_GATE_TOPOLOGY="multinode"
if [ "$BRANCH_OVERRIDE" != "default" ] ; then
