Fix ipset:type colon handling error

README.rst

 
 Tested with:
 
-* 2014.1.x
-* 2015.5.x
+* 2017.7.x
+* 2018.3.x
 
 OS Compatibility
 ================

firewalld/ipsets.sls

     - watch_in:
       - cmd: reload_firewalld # reload firewalld config
     - context:
-        name: {{ z_name }}
-        ipset: {{ v }}
+        ipset: {{ v|json_encode_dict }}
 
 {% endfor %}
 {%- endif %}