cflowd must use `system` as source interface

geant/gap_ansible/roles/promote_p_to_pe/templates/routers/nokia/pe_base_config.j2

@@ -5,6 +5,7 @@
        {% include 'filters/cpm_filters.j2' %}
        {% include 'policy_options/policy_options.j2' %}
        {% include 'cflowd.j2' %}
+       {% include 'system/security/security.j2' %}
        {% include 'router/router_base.j2' %}
        {% include 'sdp_mesh.j2' %}
    </configure>

geant/gap_ansible/roles/promote_p_to_pe/templates/routers/nokia/system/security/security.j2

+
+    <system>
+      <security>
+      {% with nokia_applications=pe_nokia_applications %}
+        {% include 'system/security/source_addresses.j2' %}
+      {% endwith %}
+      </security>
+    </system>

geant/gap_ansible/roles/promote_p_to_pe/templates/routers/nokia/system/security/source_addresses.j2

+
+                <source-address>
+                   {% for application in nokia_applications %}
+                    <ipv4 xmlns="urn:nokia.com:sros:ns:yang:sr:conf" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns:nokia-attr="urn:nokia.com:sros:ns:yang:sr:attributes" alu:operation="replace">
+                        <application>{{ application.name }}</application>
+                        <interface-name>{{ application.interface_name }}</interface-name>
+                    </ipv4>
+                   {% endfor %}
+                </source-address>
+