Remove `replace` from vprn.j2

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

     {% for vprn in pe_vprns %}
-    <vprn alu:operation="replace">
+    <vprn>
         <service-name>{{ vprn.name }}</service-name>
         <admin-state>{{ vprn.admin_state | default('enable') }}</admin-state>
         {% if vprn.description is defined %}