Add ability to set build_rate_limit for octavia manager

PROD-33777

Change-Id: I0e94645b64957284503b578278a7ab41785e15aa
diff --git a/tests/pillar/manager_single.sls b/tests/pillar/manager_single.sls
index a6eab24..fe40b1d 100644
--- a/tests/pillar/manager_single.sls
+++ b/tests/pillar/manager_single.sls
@@ -33,6 +33,7 @@
       amp_ssh_key_name: octavia_ssh_key
       loadbalancer_topology: 'SINGLE'
     haproxy_amphora:
+      build_rate_limit: 2
       client_cert: '/etc/octavia/certs/client.pem'
       client_cert_key: '/etc/octavia/certs/client.key'
       client_cert_all: '/etc/octavia/certs/client_all.pem'