Fix for Policy banner template - Bannerdelimiter special character issue (#356)

* add quotes for bannerdelimiter

* Updated for key in

Author: juburnet

roles/dtc/common/templates/ndfc_policy.j2

@@ -33,6 +33,8 @@
 {% elif key == "BANNER" %}
             {{ key }}: |
               {{ value | indent(14) }}
+{% elif key in ["BANNERDELIMITER"] %}
+            {{ key }}: "{{ value }}"
 {% elif key in ["asn", "BGP_AS", "BGP_ASN", "NEIGHBOR_ASN"] %}
             {{ key }}: "{{ value | string | indent(12) | trim }}"
 {% elif value is iterable and '\n' in value %}