Applies neutron-conductor service on OpenStack Havana

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Tested on CentOS 6.4

Environment:
Linux devstack-centos64 2.6.32-358.123.2.openstack.el6.x86_64 #1 SMP
Thu Sep 26 17:14:58 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux

Used localrc for testing:
https://gist.github.com/zyluo/9503014

Neutron conductor branch:
https://github.com/zyluo/neutron/tree/havana_conductor_sg_only