missing space breaks haproxy from starting

TrivialFix

Change-Id: I11efb23a51d424710cdb3bab520b572486b16be6

ansible/roles/haproxy/templates/haproxy.cfg.j2

@@ -412,7 +412,7 @@ listen sahara_api
 listen sahara_api_external
   bind {{ kolla_external_vip_address }}:{{ sahara_api_port }} {{ tls_bind_info }}
 {% for host in groups['sahara-api'] %}
-  server {{ hostvars[host]['ansible_hostname'] }} {{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ sahara_api_port }} check inter 2000rise 2 fall 5
+  server {{ hostvars[host]['ansible_hostname'] }} {{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ sahara_api_port }} check inter 2000 rise 2 fall 5
 {% endfor %}
 {% endif %}
 {% endif %}