Description of configuration options for vpn

Configuration option = Default value	Description
[ipsec]
config_base_dir = $state_path/ipsec	(StrOpt) Location to store ipsec server config files
ipsec_status_check_interval = 60	(IntOpt) Interval for checking ipsec status
[openswan]
ipsec_config_template = /usr/lib/python/site-packages/neutron/services/vpn/device_drivers/template/openswan/ipsec.conf.template	(StrOpt) Template file for ipsec configuration
ipsec_secret_template = /usr/lib/python/site-packages/neutron/services/vpn/device_drivers/template/openswan/ipsec.secret.template	(StrOpt) Template file for ipsec secret configuration
[vpnagent]
vpn_device_driver = ['neutron.services.vpn.device_drivers.ipsec.OpenSwanDriver']	(MultiStrOpt) The vpn device drivers Neutron will use