Parametrize ironic VM mac addresses

Since baremetal simulator is going to be deployed
on 3 baremetal nodes - ironic VM mac addresses
should be unique across nodes otherwise ironic ports
won`t be created. This patch parametrizes the first 3
octets (vendor id) of mac adress hence it can be set on
reclass node level

Change-Id: Ib7f39c63f5e61b16609ca23a463b2e25c92b3954
Related-PROD: PROD-24887
diff --git a/metadata/service/nodes_neutron.yml b/metadata/service/nodes_neutron.yml
index 495813f..0e26a09 100644
--- a/metadata/service/nodes_neutron.yml
+++ b/metadata/service/nodes_neutron.yml
@@ -1,6 +1,8 @@
 applications:
   - baremetal_simulator
 parameters:
+  _param:
+    openstack_baremetal_simulator_mac_vendor: "aa:bb:cc"
   ironic:
     client:
       enabled: true
@@ -23,13 +25,13 @@
             network_interface: 'neutron'
             microversion: '1.20'
             ports:
-              - address: aa:bb:cc:dd:00:00
+              - address: "${_param:openstack_baremetal_simulator_mac_vendor}:dd:00:00"
                 local_link_connection:
                   switch_id: 00:00:00:00:00:00
                   switch_info: br-simulator
                   port_id: tap-bmt-n0i1
                 microversion: '1.19'
-              - address: aa:bb:cc:dd:00:01
+              - address: "${_param:openstack_baremetal_simulator_mac_vendor}:dd:00:01"
                 local_link_connection:
                   switch_id: 00:00:00:00:00:00
                   switch_info: br-simulator
@@ -52,7 +54,7 @@
             network_interface: 'neutron'
             microversion: '1.20'
             ports:
-              - address: aa:bb:cc:dd:01:00
+              - address: "${_param:openstack_baremetal_simulator_mac_vendor}:dd:01:00"
                 local_link_connection:
                   switch_id: 00:00:00:00:00:00
                   switch_info: br-simulator
@@ -80,7 +82,7 @@
             network_interface: 'neutron'
             microversion: '1.20'
             ports:
-              - address: aa:bb:cc:dd:02:00
+              - address: "${_param:openstack_baremetal_simulator_mac_vendor}:dd:02:00"
                 local_link_connection:
                   switch_id: 00:00:00:00:00:00
                   switch_info: br-simulator