perhaps this is more of a question than statement.
haproxy logging produces very little output. It does not log any traffic/request like all other services do by default. Comparing the config to the haproxy documentation does seem to suggest that it should log more.
[root@eselde02u35 _data]# cat haproxy/haproxy.log
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy stats started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy rabbitmq_management started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy keystone_internal started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy keystone_external started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy keystone_admin started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy glance_registry started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy glance_api started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy glance_api_external started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy nova_api started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy nova_metadata started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy nova_novncproxy started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy nova_api_external started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy nova_metadata_external started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy nova_novncproxy_external started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy neutron_server started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy neutron_server_external started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy horizon started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy horizon_external started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy sahara_api started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy sahara_api_external started.
<5>2016-09-23T10:35:26Z eselde02u35 haproxy[11]: Proxy mariadb started.
haproxy logs is written into syslog and received by heka/fluentd, now.
so mark this as invalid