test(map): verify map.jinja dump using _mapdata state

* Semi-automated using https://github.com/myii/ssf-formula/pull/245

sudoers/_mapdata/init.sls

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# vim: ft=sls
+---
+{#- Get the `tplroot` from `tpldir` #}
+{%- set tplroot = tpldir.split('/')[0] %}
+{%- from tplroot ~ "/map.jinja" import sudoers with context %}
+
+{%- set map = {
+      'sudoers': sudoers,
+    } %}
+{%- do salt['log.debug']('### MAP.JINJA DUMP ###\n' ~ map | yaml(False)) %}
+
+{%- set output_file = '/tmp/salt_mapdata_dump.yaml' %}
+
+{{ tplroot }}-mapdata-dump:
+  file.managed:
+    - name: {{ output_file }}
+    - source: salt://{{ tplroot }}/_mapdata/_mapdata.jinja
+    - template: jinja
+    - context:
+        map: {{ map | yaml }}