adding linuxbridge agent feature to neutron formula.

by this user will be able to enable linuxbridge agent insted of default openvswitch from cluster level.

Pillar changes are :

neutron:gateway:backend:mechanism:lb:driver = linuxbridge
neutron:compute:backend:mechanism:lb:driver = linuxbridge
neutron:gateway:agents:l3:interface_driver = linuxbridge

Closes-Bug: https://mirantis.jira.com/browse/PROD-24715

Change-Id: Ic1ca59155a1833eea928450fca8172321f88602d
diff --git a/tests/pillar/compute_linuxbridge.sls b/tests/pillar/compute_linuxbridge.sls
new file mode 100644
index 0000000..5c29787
--- /dev/null
+++ b/tests/pillar/compute_linuxbridge.sls
@@ -0,0 +1,26 @@
+neutron:
+  compute:
+    agent_mode: legacy
+    firewall_driver: iptables
+    backend:
+      engine: ml2
+      tenant_network_types: "flat,vxlan"
+      mechanism:
+        lb:
+          driver: linuxbridge
+    dvr: false
+    enabled: true
+    external_access: false
+    local_ip: 10.1.0.105
+    message_queue:
+      engine: rabbitmq
+      host: 127.0.0.1
+      password: workshop
+      port: 5672
+      user: openstack
+      virtual_host: /openstack
+    metadata:
+      host: 127.0.0.1
+      password: password
+      workers: 2
+    version: mitaka
diff --git a/tests/pillar/control_linuxbridge.sls b/tests/pillar/control_linuxbridge.sls
new file mode 100644
index 0000000..8bc35b6
--- /dev/null
+++ b/tests/pillar/control_linuxbridge.sls
@@ -0,0 +1,54 @@
+neutron:
+  server:
+    api_workers: 2
+    rpc_workers: 2
+    rpc_state_report_workers: 2
+    backend:
+      engine: ml2
+      external_mtu: 1500
+      mechanism:
+        lb:
+          driver: linuxbridge
+      tenant_network_types: flat,vxlan
+    bind:
+      address: 172.16.10.101
+      port: 9696
+    compute:
+      host: 127.0.0.1
+      password: workshop
+      region: RegionOne
+      tenant: service
+      user: nova
+    database:
+      engine: mysql
+      host: 127.0.0.1
+      name: neutron
+      password: workshop
+      port: 3306
+      user: neutron
+    dns_domain: novalocal
+    dvr: false
+    enabled: true
+    global_physnet_mtu: 1500
+    identity:
+      engine: keystone
+      host: 127.0.0.1
+      password: workshop
+      port: 35357
+      region: RegionOne
+      tenant: service
+      user: neutron
+      endpoint_type: internal
+    l3_ha: True
+    message_queue:
+      engine: rabbitmq
+      host: 127.0.0.1
+      password: workshop
+      port: 5672
+      user: openstack
+      virtual_host: /openstack
+    version: mitaka
+    policy:
+      create_subnet: 'rule:admin_or_network_owner'
+      'get_network:queue_id': 'rule:admin_only'
+      'create_network:shared':
diff --git a/tests/pillar/gateway_linuxbridge.sls b/tests/pillar/gateway_linuxbridge.sls
new file mode 100644
index 0000000..4cbac35
--- /dev/null
+++ b/tests/pillar/gateway_linuxbridge.sls
@@ -0,0 +1,32 @@
+neutron:
+  gateway:
+    agent_mode: legacy
+    dhcp_lease_duration: 86400
+    firewall_driver: iptables
+    backend:
+      engine: ml2
+      tenant_network_types: "flat,vxlan"
+      mechanism:
+        ovs:
+          driver: openvswitch
+    dvr: false
+    enabled: true
+    external_access: True
+    local_ip: 10.1.0.110
+    message_queue:
+      engine: rabbitmq
+      host: 127.0.0.1
+      password: workshop
+      port: 5672
+      user: openstack
+      virtual_host: /openstack
+    metadata:
+      host: 127.0.0.1
+      password: password
+      workers: 2
+    version: mitaka
+    agents:
+      dhcp:
+        interface_driver: linuxbridge
+      l3:
+        interface_driver: linuxbridge