reformatting community-list community numbers to colon format

[jeffkala]

Environment

• netutils version: 1.0.0

Proposed Functionality

Use Case

ip community-list FROM_LOCAL_ROUTER_ID permit 1684594711
# CONVERTS TO THE BELOW
ip community-list FROM_LOCAL_ROUTER_ID permit 25704:57367

jinja example to help with creating it.

{% macro comm_no_colon(community) %}
{{ community // 2**16 }}:{{ community % 2**16 }}
{% endmacro %}
ip community-list FROM_LOCAL_ROUTER_ID permit {{ comm_no_colon(1684594711) }}

[jeffkala]

add int_to_asn function in asn.py.