Adding docker service for the L2GW

L2GW Neutron driver is only present in neutron-server-opendaylight
  image. This service will apply its configuration to that image,
  but it should be extensible to other containers such neutron-server
  in the future.

Depends-On: I22023a645c4752c6371b5cea5ab69c7503991887
Change-Id: I9c39e9ff2ce2e15d3e383035c8cac7413e9eeb03
Signed-off-by: Ricardo Noriega <rnoriega@redhat.com>

docker/services/neutron-l2gw-api.yaml

@@ -0,0 +1,68 @@
+heat_template_version: queens
+
+description: >
+  Containerized L2GW Service Plugin
+
+parameters:
+  ServiceData:
+    default: {}
+    description: Dictionary packing service data
+    type: json
+  ServiceNetMap:
+    default: {}
+    description: Mapping of service_name -> network name. Typically set
+                 via parameter_defaults in the resource registry.  This
+                 mapping overrides those in ServiceNetMapDefaults.
+    type: json
+  DefaultPasswords:
+    default: {}
+    type: json
+  RoleName:
+    default: ''
+    description: Role name on which the service is applied
+    type: string
+  RoleParameters:
+    default: {}
+    description: Parameters specific to the role
+    type: json
+  EndpointMap:
+    default: {}
+    description: Mapping of service endpoint -> protocol. Typically set
+                 via parameter_defaults in the resource registry.
+    type: json
+  DockerNeutronConfigImage:
+    description: The container image to use for the neutron config_volume
+    type: string
+
+resources:
+
+  ContainersCommon:
+    type: ./containers-common.yaml
+
+  NeutronL2gwBase:
+    type: ../../puppet/services/neutron-l2gw-api.yaml
+    properties:
+      EndpointMap: {get_param: EndpointMap}
+      ServiceData: {get_param: ServiceData}
+      ServiceNetMap: {get_param: ServiceNetMap}
+      DefaultPasswords: {get_param: DefaultPasswords}
+      RoleName: {get_param: RoleName}
+      RoleParameters: {get_param: RoleParameters}
+
+outputs:
+  role_data:
+    description: Role data for the L2 Gateway role.
+    value:
+      service_name:
+          get_attr: [NeutronL2gwBase, role_data, service_name]
+      config_settings:
+          get_attr: [NeutronL2gwBase, role_data, config_settings]
+      # BEGIN DOCKER SETTING
+      puppet_config:
+        config_volume: 'neutron'
+        puppet_tags: neutron_l2gw_service_config
+        step_config:
+          get_attr: [NeutronL2gwBase, role_data, step_config]
+        config_image: {get_param: DockerNeutronConfigImage}
+      kolla_config: {}
+      docker_config: {}

environments/services-docker/neutron-l2gw-opendaylight.yaml

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+# A Heat environment file that can be used to deploy Neutron L2 Gateway service
+#
+# Currently there are only two service provider for Neutron L2 Gateway
+# This file enables L2GW service with OpenDaylight as driver.
+#
+# - OpenDaylight: L2GW:OpenDaylight:networking_odl.l2gateway.driver.OpenDaylightL2gwDriver:default
+resource_registry:
+  OS::TripleO::Services::NeutronL2gwApi: ../../docker/services/neutron-l2gw-api.yaml
+
+parameter_defaults:
+  NeutronServicePlugins: "odl-router_v2,trunk,l2gw"
+  L2gwServiceProvider: ['L2GW:OpenDaylight:networking_odl.l2gateway.driver.OpenDaylightL2gwDriver:default']
+
+  # Optional
+  # L2gwServiceDefaultInterfaceName: "FortyGigE1/0/1"
+  # L2gwServiceDefaultDeviceName: "Switch1"
+  # L2gwServiceQuotaL2Gateway: 10
+  # L2gwServicePeriodicMonitoringInterval: 5