Add ML2 support and configure OVS correctly with VXLAN

Part of https://dev.ring.enovance.com/redmine/issues/4382

Signed-off-by: Emilien Macchi <emilien.macchi@enovance.com>

roles/network/network_common.pp

@@ -24,6 +24,7 @@ class os_network_common(
   $debug               = $os_params::debug,
   $rabbit_hosts        = $os_params::rabbit_hosts,
   $rabbit_password     = $os_params::rabbit_password,
+  $local_ip            = $os_params::tunnel_int
 ) {
 
   $encoded_user = uriescape($neutron_db_user)
@@ -40,10 +41,24 @@ class os_network_common(
     dhcp_agents_per_network => 2
   }
 
+  # While https://review.openstack.org/#/c/55578 got merged:
   class { 'neutron::plugins::ovs':
     connection      => "mysql://${encoded_user}:${encoded_password}@${neutron_db_host}/neutron?charset=utf8",
-    tenant_network_type => 'gre',
+    tenant_network_type => 'vxlan',
     network_vlan_ranges => false
   }
 
+  class { 'neutron::plugins::ml2':
+    type_drivers          => ['vxlan'],
+    tenant_network_types  => ['vxlan'],
+    vxlan_group           => '239.1.1.1',
+    mechanism_drivers     => ['openvswitch'],
+    vni_ranges            => ['0:10000000']
+  }
+    
+  class { 'neutron::agents::ovs':
+    enable_tunneling => true,
+    local_ip         => $local_ip
+  }
+
 }

roles/network/network_compute.pp

@@ -20,7 +20,6 @@ class os_network_compute(
   $neutron_endpoint = $os_params::ks_neutron_admin_host,
   $neutron_protocol = $os_params::ks_neutron_public_proto,
   $neutron_password = $os_params::ks_neutron_password,
-  $local_ip         = $os_params::tunnel_int
 ) {
 
   class { 'nova::network::neutron':
@@ -29,9 +28,4 @@ class os_network_compute(
       neutron_url            => "${neutron_protocol}://${neutron_endpoint}:9696"
   }
 
-  class { 'neutron::agents::ovs':
-    enable_tunneling => true,
-    local_ip         => $local_ip
-  }
-
 }

site-ref.pp

@@ -125,6 +125,7 @@ node '3-object-storage-nodes' inherits common{
 # Compute nodes
 node 'compute-node' inherits common {
 
+  class { 'os_network_common': }
   class { 'os_network_compute': }
 
   class { 'os_compute_hypervisor':