Simplify the ng.config template

Use join and indent in an easier way to align multiple entries.
Contrary to the comment, it is possible to check for lists in jinja,
which makes the template much less complex.

fail2ban/ng/files/config.jinja

@@ -1,21 +1,12 @@
 #
 # This file is managed by salt. Do not edit by hand.
 #
-{% macro print_config(name, value) %}
-    {%- set name_length = name|length %}
-    {%- if value is string %}
-{{ name }} = {{ value }}
-    {%- elif value is number %}
-{{ name }} = {{ value }}
-    {%- else %}
-    {#- Since strings are also sequences, there's no way to explicitly test for lists #}
-{{ name }} = {{ value|first }}
-        {%- if value|length > 1 %}
-            {%- for item in value[1:] %}
-{{ item|indent(width=name_length + 3, indentfirst=True) }}
-            {%- endfor %}
-        {%- endif %}
-    {%- endif %}
+{%- macro print_config(name, value) %}
+{%-   if value is iterable and value is not string %}
+{{      name }} = {{ value | join('\n') | indent(name | length + 3) }}
+{%-   else %}
+{{      name }} = {{ value }}
+{%-   endif %}
 {%- endmacro %}
 
 {%- for section, section_data in config|dictsort %}