Implements fix to run lbaas service on fedora with devstack

changes 'user_group = nobody' in 'haproxy' section of lbaas_agent.ini

Change-Id: I801fec5a11d8abd97cb6f5cdff35fabb9eaf9000
Closes-Bug: 1283064
diff --git a/lib/neutron_plugins/services/loadbalancer b/lib/neutron_plugins/services/loadbalancer
index 5d7a94e..3714142 100644
--- a/lib/neutron_plugins/services/loadbalancer
+++ b/lib/neutron_plugins/services/loadbalancer
@@ -38,6 +38,7 @@
 
     if is_fedora; then
         iniset $LBAAS_AGENT_CONF_FILENAME DEFAULT user_group "nobody"
+        iniset $LBAAS_AGENT_CONF_FILENAME haproxy user_group "nobody"
     fi
 }