fix beacons on dev

salt/files/minion.d/beacons.conf

@@ -1,7 +1,7 @@
 #
 # This file is managed by Salt! Do not edit by hand!
 #
-{%- set beacons = salt['pillar.get']('salt:beacons') -%}
+{%- set beacons = salt['pillar.get']('salt:beacons', {}) -%}
 {%- set beacons = salt['pillar.get']('salt:minion:beacons', default=beacons, merge=True) -%}
 {%- if beacons %}
 beacons: