Support multiple emulation host in CI job about ovn-scale-test HOT 8 CLOSED

diff --git a/ci/scale-run.sh b/ci/scale-run.sh
index 424e7e2..b646326 100755
--- a/ci/scale-run.sh
+++ b/ci/scale-run.sh
@@ -67,12 +67,15 @@ $OVNSUDO docker exec ovn-south-database ovn-sbctl show
 $OVNSUDO docker exec ovn-rally rally-ovs deployment create --file /root/rally-ovn/ovn-multihost-deployment.json --name ovn-multihost

 # Register the emulated sandboxes in the rally database
-$OVNSUDO docker exec ovn-rally rally-ovs task start /root/rally-ovn/workload/create-sandbox-$OVN_RALLY_HOSTNAME.json 2>&1 | tee /tmp/rally-ovs-output.raw
-check_ovn_rally /tmp/rally-ovs-output.raw
-TASKID=$($OVNSUDO docker exec ovn-rally rally task list --uuids-only)
-$OVNSUDO docker exec ovn-rally rally task report $TASKID --out /root/create-sandbox-output.html
-$OVNSUDO docker cp ovn-rally:/root/create-sandbox-output.html .
-$OVNSUDO docker exec ovn-rally rally task delete --uuid $TASKID
+SANDBOXHOSTS=$($OVNSUDO docker exec ovn-rally ls root/rally-ovn/workload/ | grep create-sandbox-)
+for sand in $SANDBOXHOSTS ; do
+    $OVNSUDO docker exec ovn-rally rally-ovs task start /root/rally-ovn/workload/$sand 2>&1 | tee /tmp/rally-ovs-output.raw
+    check_ovn_rally /tmp/rally-ovs-output.raw
+    TASKID=$($OVNSUDO docker exec ovn-rally rally task list --uuids-only)
+    $OVNSUDO docker exec ovn-rally rally task report $TASKID --out /root/create-sandbox-output.html
+    $OVNSUDO docker cp ovn-rally:/root/create-sandbox-output.html .
+    #$OVNSUDO docker exec ovn-rally rally task delete --uuid $TASKID
+done

 # Run tests
 $OVNSUDO docker exec ovn-rally rally-ovs task start /root/rally-ovn/workload/create_networks.json 2>&1 | tee /tmp/rally-ovs-output.raw

# You should only add one IP address in this role. The node in this role runs
# the OVN databse container
[ovn-control]
10.172.12.53

# Add host IPs to run emulated OVN chassis
[emulation-hosts]
10.172.12.40      provider_ip=10.172.12.40
10.172.12.53      provider_ip=10.172.12.53

[rally]
10.172.12.53