Error in CentOS EL 7- Configuration of OpenStack-Libraty

Hello, I am facing a problem in CentOS EL 7- Configuration of OpenStack-Libraty I found error below when I use neutron command. 

# neutron-db-manage --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugins/ml2/ml2_conf.ini upgrade head
Traceback (most recent call last):
  File "/usr/bin/neutron-db-manage", line 10, in <module>
    sys.exit(main())
  File "/usr/lib/python2.7/site-packages/neutron/db/migration/cli.py", line 550, in main
    CONF(project='neutron')
  File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 1885, in __call__
    else sys.argv[1:])
  File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 2467, in _parse_cli_opts
    return self._parse_config_files()
  File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 2484, in _parse_config_files
    self._oparser.parse_args(self._args, namespace)
  File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 1743, in parse_args
    return super(_CachedArgumentParser, self).parse_args(args, namespace)
  File "/usr/lib64/python2.7/argparse.py", line 1688, in parse_args
    args, argv = self.parse_known_args(args, namespace)
  File "/usr/lib64/python2.7/argparse.py", line 1720, in parse_known_args
    namespace, args = self._parse_known_args(args, namespace)
  File "/usr/lib64/python2.7/argparse.py", line 1926, in _parse_known_args
    start_index = consume_optional(start_index)
  File "/usr/lib64/python2.7/argparse.py", line 1866, in consume_optional
    take_action(action, args, option_string)
  File "/usr/lib64/python2.7/argparse.py", line 1794, in take_action
    action(self, namespace, argument_values, option_string)
  File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 1238, in __call__
    ConfigParser._parse_file(values, namespace)
  File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 1446, in _parse_file
    raise ConfigFileParseError(pe.filename, str(pe))
oslo_config.cfg.ConfigFileParseError: Failed to parse /etc/neutron/neutron.conf: at /etc/neutron/neutron.conf:92, Unexpected continuation line: ' auth_strategy = keystone'

Please Help to solve this problem.
Thanks
regardsWaqar
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