Add ovs/igmp_snooping_enable support

This patch is adding support to the "ovs/igmp_snooping_enable"
configuration option in the ml2_conf.ini configuration file.

Conflicts:
      manifests/agents/ml2/ovs.pp
      manifests/server.pp
      spec/classes/neutron_agents_ml2_ovs_spec.rb

Related-Bug: #1868569

Change-Id: I1d96899de29cdd994f2a45b701923b0177a7edd8
Signed-off-by: Lucas Alvares Gomes <lucasagomes@gmail.com>
(cherry picked from commit 382352a893)

manifests/agents/ml2/ovs.pp

@@ -179,6 +179,18 @@
 #  final egress tables direct output flows for unicast traffic. (boolean value)
 #  Defaults to $::os_service_default
 #
+# [*igmp_snooping_enable*]
+#   (Optional) Enable IGMP snooping for integration bridge. If this
+#   option is set to True, support for Internet Group Management
+#   Protocol (IGMP) is enabled in integration bridge.
+#   Setting this option to True will also enable Open vSwitch
+#   mcast-snooping-disable-flood-unregistered flag. This option will
+#   disable flooding of unregistered multicast packets to all ports.
+#   The switch will send unregistered multicast packets only to ports
+#   connected to multicast routers. This option is used by the ML2/OVS
+#   mechanism driver for Neutron.
+#   Defaults to $::os_service_default
+#
 # DEPRECATED
 #
 # [*of_interface*]
@@ -219,6 +231,7 @@ class neutron::agents::ml2::ovs (
   $minimize_polling           = $::os_service_default,
   $tunnel_csum                = $::os_service_default,
   $explicitly_egress_direct   = $::os_service_default,
+  $igmp_snooping_enable       = $::os_service_default,
   # DEPRECATED
   $of_interface               = undef,
 ) {
@@ -331,6 +344,7 @@ class neutron::agents::ml2::ovs (
     'ovs/ovsdb_interface':                  value => $ovsdb_interface;
     'ovs/of_interface':                     value => $of_interface;
     'securitygroup/enable_security_group':  value => $enable_security_group;
+    'ovs/igmp_snooping_enable':             value => $igmp_snooping_enable;
   }
 
   if $firewall_driver {

spec/classes/neutron_agents_ml2_ovs_spec.rb

@@ -66,6 +66,7 @@ describe 'neutron::agents::ml2::ovs' do
       should contain_neutron_agent_ovs('ovs/tun_peer_patch_port').with_ensure('absent')
       should contain_neutron_agent_ovs('agent/tunnel_types').with_ensure('absent')
       should contain_neutron_agent_ovs('agent/explicitly_egress_direct').with_value(['<SERVICE DEFAULT>'])
+      should contain_neutron_agent_ovs('ovs/igmp_snooping_enable').with_value('<SERVICE DEFAULT>')
     end
 
     it 'installs neutron ovs agent package' do
@@ -387,6 +388,17 @@ describe 'neutron::agents::ml2::ovs' do
         should contain_neutron_agent_ovs('agent/explicitly_egress_direct').with_value(true)
       end
     end
+
+    context 'with IGMP snooping enabled' do
+      before :each do
+        params.merge!(:igmp_snooping_enable => true)
+      end
+
+      it 'configure neutron/plugins/ml2/ml2_conf.ini' do
+        should contain_neutron_agent_ovs('ovs/igmp_snooping_enable').with_value(true)
+      end
+    end
+
   end
 
   on_supported_os({