Add DVR support

Additional service neutron-l3-agent-compute was added
with a corresponding config file since agent mode should
differ on controllers and computes in a DVR env.
Metadata agent should be running on both controllers and
computes in a DVR env.

Change-Id: I62af129331773b1ae42530a0079937942952701b

service/files/defaults.yaml

@@ -30,6 +30,7 @@ configs:
     debug: false
     plugin_agent: "openvswitch"
     l3_ha: false
+    dvr: false
     ovsdb:
       interface: "native"
       connection: "unix:/run/openvswitch/db.sock"

service/files/l3_agent.ini.j2

@@ -1,4 +1,4 @@
 # l3_agent.ini
 [DEFAULT]
-agent_mode = legacy
+agent_mode = {% if neutron.dvr %} dvr_snat {% else %} legacy {% endif %}
 external_network_bridge =

service/files/l3_agent_compute.ini.j2

@@ -0,0 +1,3 @@
+# l3_agent_compute.ini
+[DEFAULT]
+agent_mode = dvr

service/files/ml2_conf.ini.j2

@@ -52,6 +52,10 @@ tunnel_types = vxlan
 l2_population = true
 arp_responder = true
 
+{% if neutron.dvr %}
+enable_distributed_routing = true
+{% endif %}
+
 [ovs]
 ovsdb_interface = {{ neutron.ovsdb.interface }}
 ovsdb_connection = {{ neutron.ovsdb.connection }}

service/files/neutron.conf.j2

@@ -35,6 +35,10 @@ l3_ha = {{ neutron.l3_ha }}
 # If it is set to 0 then the ha router will be scheduled on every L3 agent.
 max_l3_agents_per_router=0
 
+{% if neutron.dvr %}
+# System-wide flag to determine the type of router that tenants can create. Only admin can override. (boolean value)
+router_distributed = true
+{% endif %}
 
 {% if neutron.enable_lbaas %}
 [service_providers]

service/neutron-l3-agent-compute.yaml

@@ -0,0 +1,37 @@
+dsl_version: 0.2.0
+service:
+  name: neutron-l3-agent-compute
+  antiAffinity: local
+  hostNetwork: true
+  containers:
+    - name: neutron-l3-agent
+      image: neutron-l3-agent
+      privileged: true
+      volumes:
+        - name: ovs-socket
+          type: host
+          path: /run/openvswitch
+        - name: metadata-socket
+          type: host
+          path: /var/lib/neutron/ccp
+      daemon:
+        command: neutron-l3-agent --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/l3_agent_compute.ini  --config-file /etc/neutron/plugins/ml2/ml2_conf.ini
+        dependencies:
+          - rabbitmq
+        files:
+          - neutron.conf
+          - ml2-conf.ini
+          - l3-agent-compute.ini
+files:
+  neutron.conf:
+    path: /etc/neutron/neutron.conf
+    content: neutron.conf.j2
+    perm: "0600"
+  ml2-conf.ini:
+    path: /etc/neutron/plugins/ml2/ml2_conf.ini
+    content: ml2_conf.ini.j2
+    perm: "0600"
+  l3-agent-compute.ini:
+    path: /etc/neutron/l3_agent_compute.ini
+    content: l3_agent_compute.ini.j2
+    perm: "0600"

service/neutron-metadata-agent.yaml

@@ -1,6 +1,9 @@
-dsl_version: 0.1.0
+dsl_version: 0.2.0
 service:
   name: neutron-metadata-agent
+  # {% if neutron.dvr %}
+  antiAffinity: local
+  # {% endif %}
   hostNetwork: true
   containers:
     - name: neutron-metadata-agent