add route-reflector-client support; fix form_factor

vyos.conf.j2

@@ -54,7 +54,7 @@ interfaces {
         }
         {% endif %}
     }
-{% elif iface_data['form_factor']['label'] != 'Virtual' %}
+{% elif iface_data.get('form_factor',{}).get('label','') != 'Virtual' %}
     ethernet {{ iface_name }} {
         description "{{ iface_data['description'].replace('"','\\"') or "-" }}{% if iface_data['connected_endpoint'] and iface_data['connected_endpoint']['connection_status']['value'] %} ({% if iface_data['connected_endpoint']['device'] %}{{ iface_data['connected_endpoint']['name'] }} @ {{ iface_data['connected_endpoint']['device']['display_name'] }}{% endif %}){% endif %}"
         {% for address in iface_data['addresses'] %}
@@ -93,7 +93,7 @@ interfaces {
         }
         {% endfor %}
 
-        {% for subiface_name, subiface_data in pillar['netbox']['interfaces'].items() %}{% if subiface_data['form_factor']['label'] == 'Virtual' and subiface_name.startswith( iface_name + "." ) %}
+        {% for subiface_name, subiface_data in pillar['netbox']['interfaces'].items() %}{% if subiface_data.get('form_factor',{}).get('label','') == 'Virtual' and subiface_name.startswith( iface_name + "." ) %}
         {% endif %}{% endfor %}
 
         {% if salt['pillar.get']('interfaces:'+iface_name+':ip') %}
@@ -233,6 +233,7 @@ protocols {
         address-family {
             {% if as_data['address-family'].get('ipv4-unicast',None) %}
             ipv4-unicast {
+                {% if as_data['address-family']['ipv4-unicast'].get('route-reflector-client',False) %}route-reflector-client{% endif %}
                 redistribute {
                     {% for redistribute, redist_data in as_data['address-family']['ipv4-unicast'].get('redistribute',{}).items() %}
                     {{ redistribute }} {
@@ -249,6 +250,7 @@ protocols {
             {% endif %}
             {% if as_data['address-family'].get('ipv6-unicast',None) %}
             ipv6-unicast {
+                {% if as_data['address-family']['ipv6-unicast'].get('route-reflector-client',False) %}route-reflector-client{% endif %}
                 redistribute {
                     {% for redistribute, redist_data in as_data['address-family']['ipv6-unicast'].get('redistribute',{}).items() %}
                     {{ redistribute }} {