Add support for Neutron L3 HA feature

Neutron L3 HA feature adds an ability to schedule a virtual router to at least
two L3 agents and an opportunity to establish connection faster after L3 agent
failover than router rescheduling.
L3 HA is currently not compatible with Neutron DVR

Change-Id: If62bc89c493241b78422e55f1865031db23705ed
Blueprint: neutron-vrrp-deployment

nailgun/nailgun/fixtures/openstack.yaml

@@ -933,6 +933,15 @@
             type: "checkbox"
             restrictions:
               - "networking_parameters:segmentation_type != 'vlan' and settings:neutron_advanced_configuration.neutron_l2_pop.value == false": "DVR requires L2 population to be enabled."
+          neutron_l3_ha:
+            value: false
+            label: "Neutron L3 HA"
+            description: "Enable High Availability Features for Virtual Routers in Neutron"
+            weight: 30
+            type: "checkbox"
+            restrictions:
+              - condition: "settings:neutron_advanced_configuration.neutron_dvr.value == true"
+                message: "Neutron DVR must be disabled in order to use Neutron L3 HA"
         corosync:
           metadata:
             label: "Corosync"

nailgun/nailgun/statistics/fuel_statistics/installation_info.py

@@ -60,6 +60,8 @@ class InstallationInfo(object):
                        'value'), 'neutron_l2_pop', None),
         WhiteListRule(('neutron_advanced_configuration', 'neutron_dvr',
                        'value'), 'neutron_dvr', None),
+        WhiteListRule(('neutron_advanced_configuration', 'neutron_l3_ha',
+                       'value'), 'neutron_l3_ha', None),
         WhiteListRule(('syslog', 'syslog_transport', 'value'),
                       'syslog_transport', None),
         WhiteListRule(('provision', 'method', 'value'),