The docstring for topic is not correct.
Change-Id: I6174453eb1c41c398ecffbab59c45b0678637672
:param host: defaults to CONF.host
:param binary: defaults to basename of executable
- :param topic: defaults to bin_name - 'nova-' part
+ :param topic: defaults to bin_name - 'neutron-' part
:param manager: defaults to CONF.<topic>_manager
:param report_interval: defaults to CONF.report_interval
:param periodic_interval: defaults to CONF.periodic_interval