Release 5.0.0 - Juno

Changes in this release:
* Added neutron::policy to control policy.json
* Added parameter allow_automatic_l3agent_failover to neutron::agents::l3
* Added parameter metadata_memory_cache_ttl to neutron::agents::metadata
* Added l3_ext as a provider_network_type property for neutron_network type
* Changed user_group parameter in neutron::agents::lbaas to have different defaults depending on operating system
* Changed openswan package to libreswan for RHEL 7 for vpnaas
* Ensured neutron package was installed before nova_admin_tenant_id_setter is called
* Added api_extensions_path parameter to neutron class
* Added database tuning parameters
* Changed management of file lines in /etc/default/neutron-server only for Ubuntu
* Add parameters to enable DVR and HA support in neutron::agents::l3 for Juno
* Fixed meaning of manage_service parameter in neutron::agents::ovs
* Made keystone user creation optional when creating a service
* Fixed the enable_dhcp property of neutron_subnet
* Added the ability to override the keystone service name in neutron::keystone::auth
* Fixed bug in parsing allocation pools in neutron_subnet type
* Added relationship to refresh neutron-server when nova_admin_tenant_id_setter changes
* Migrated the neutron::db::mysql class to use openstacklib::db::mysql and deprecated the mysql_module parameter
* Fixed the relationship between the HA proxy package and the neutron-lbaas-agent package
* Added kombu_reconnect_delay parameter to neutron class
* Fixed plugin.ini error when cisco class is used
* Fixed relationship between vs_pridge types and the neutron-plugin-ovs service
* Added neutron::agents::n1kv_vem to deploy N1KV VEM
* Added SSL support for nova_admin_tenant_id_setter
* Fixed relationship between neutron-server package and neutron_plugin_ml2 types
* Stopped puppet from trying to manage the ovs cleanup service
* Deprecated the network_device_mtu parameter in neutron::agents::l3 and moved it to the neutron class
* Added vpnaas_agent_package parameter to neutron::services::fwaas to install the vpnaas agent package

Change-Id: Ia9c491db751cce07c67236ed5ccfe2fb73e782ba