To build a custom-cirros image for octavia workloads you need to set the below variables

install_browbeat_workloads: true
browbeat_network: <private network ID with external access>
enabled: true for octavia
octavia_test_bin_path, specify the path of test_bin.sh

One can generate the test binary as follows
https://github.com/openstack/octavia-tempest-plugin/blob/master/octavia_tempest_plugin/contrib/test_server/README.rst

Change-Id: If88eba8887b1bf539e4cd4000c5cf8ec1d441539

ansible/install/group_vars/all.yml

@@ -57,6 +57,13 @@ supported_distro: ((ansible_distribution == "CentOS" && ansible_distribution_maj
 # iptables file - RHEL (/etc/sysconfig/iptables) CentOS (/etc/sysconfig/iptables-config)
 iptables_file: /etc/sysconfig/iptables
 
+########################################
+# Octavia
+########################################
+#test_server.bin is a static application that
+#simulates HTTP, HTTPS, and UDP servers.
+octavia_test_bin_path:
+
 ########################################
 # Browbeat Workloads
 ########################################
@@ -83,24 +90,35 @@ browbeat_workloads:
     dest: "{{ browbeat_path }}/sysbench-user.file"
     image: centos7
     enabled: false
+    flavor: m1.small
   linpack:
     name: browbeat-linpack
     src: linpack-user.file
     dest: "{{ browbeat_path }}/linpack-user.file"
     image: centos7
     enabled: false
+    flavor: m1.small
   uperf:
     name: browbeat-uperf
     src: pbench-uperf-user.file
     dest: "{{ browbeat_path }}/pbench-uperf-user.file"
     image: centos7
     enabled: false
+    flavor: m1.small
   abench:
     name: browbeat-abench
     src: abench-user.file
     dest: "{{ browbeat_path }}/abench-user.file"
     image: centos7
     enabled: false
+    flavor: m1.small
+  octavia:
+     name: custom-cirros
+     src: custom-cirros.file
+     dest: "{{ browbeat_path }}/custom-cirros.file"
+     image: cirro5
+     enabled: false
+     flavor: m1.tiny-cirros
 
 ########################################
 # Other Install Configuration Items

ansible/install/roles/workloads/tasks/main.yml

@@ -12,7 +12,7 @@
   when: browbeat_workloads[item].enabled
 
 - name: Build images
-  shell: source {{ overcloudrc }} ; openstack server create --wait --flavor m1.small --image {{ browbeat_workloads[item].image }} --nic net-id={{ browbeat_network }} --user-data {{ browbeat_workloads[item].dest }} {{ browbeat_workloads[item].name }} | egrep '\sid\s' | awk '{print $4}'
+  shell: source {{ overcloudrc }} ; openstack server create --wait --flavor {{ browbeat_workloads[item].flavor }} --image {{ browbeat_workloads[item].image }} --nic net-id={{ browbeat_network }} --user-data {{ browbeat_workloads[item].dest }} {{ browbeat_workloads[item].name }} | egrep '\sid\s' | awk '{print $4}'
   with_items: "{{ browbeat_workloads }}"
   when: browbeat_workloads[item].enabled
   register: workload_ids

ansible/install/roles/workloads/templates/custom-cirros.file

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+cd /home/cirros/ && wget "{{ octavia_test_bin_path }}"
+echo "Browbeat workload installed"