[fix] Only show motd ip message on manager node

salt/motd/files/so_motd.jinja

@@ -1,9 +1,11 @@
 {% set needs_restarting_check = salt['mine.get']('*', 'needs_restarting.check', tgt_type='glob') -%}
+{% set role = grains.id.split('_') | last -%}
 {% set url = salt['pillar.get']('manager:url_base') -%}
 
-
+{% if role in ['eval', 'managersearch', 'manager', 'standalone'] %}
 Access the Security Onion web interface at https://{{ url }}
 (You may need to run so-allow first if you haven't yet)
+{% endif %}
 
 {%- if needs_restarting_check %}
   {%- set minions_need_restarted = [] %}