Adding IES into PE base-config

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

+{% for ies in pe_ies %}
+<ies 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">
+    <service-name>{{ ies.name }}</service-name>
+    <admin-state>{{ ies.admin_state | default('enable') }}</admin-state>
+    {% if ies.description is defined %}
+    <description>{{ ies.description }}</description>
+    {% endif %}
+    <service-id>{{ ies.service_id }}</service-id>
+    <customer>{{ ies.customer_id }}</customer>
+</ies>
+{% endfor %}