fix(tmpl): allow strings containing = in ini files

* added template clause to handle values with = signs. 
fix #176 (#180)

roles/icingaweb2/templates/ini_template.j2

@@ -8,6 +8,7 @@
 {% elif value is iterable and (value is not string and value is not mapping) %}
 {{ option }} = "{{ value | join(', ') }}"
 {% elif value is string and "=" in value %}
+{{ option }} = "{{ value | quote }}"
 {% else %}
 {{ option }} = {{ value }}
 {% endif %}