Add static dsc.0 interface config in IES template

geant/gap_ansible/roles/bc_templates/routers/nokia/router/ies.j2

@@ -7,5 +7,16 @@
     {% endif %}
     <service-id>{{ ies.service_id }}</service-id>
     <customer>{{ ies.customer_id }}</customer>
+    <interface 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">
+        <interface-name>dsc.0</interface-name>
+        <admin-state>enable</admin-state>
+        <loopback>true</loopback>
+        <ipv4>
+            <primary>
+                <address>192.0.2.112</address>
+                <prefix-length>32</prefix-length>
+            </primary>
+        </ipv4>
+</interface>
 </ies>
 {% endfor %}