Add json5 renderer (#32635)

* Add JSON5 renderer

* Add documentation RST files for json5 renderer

doc/ref/renderers/all/index.rst

@@ -16,6 +16,7 @@ Full list of builtin renderer modules
     hjson
     jinja
     json
+    json5
     mako
     msgpack
     py

doc/ref/renderers/all/salt.renderers.json5.rst

@@ -0,0 +1,6 @@
+====================
+salt.renderers.json5
+====================
+
+.. automodule:: salt.renderers.json5
+    :members:

salt/renderers/json5.py

@@ -0,0 +1,54 @@
+# -*- coding: utf-8 -*-
+'''
+JSON5 Renderer for Salt
+
+.. versionadded:: 2016.3.0
+
+JSON5 is an unofficial extension to JSON. See http://json5.org/ for more
+information.
+
+This renderer requires the `json5 python bindings`__, installable via pip.
+
+.. __: https://pypi.python.org/pypi/json5
+'''
+
+from __future__ import absolute_import
+
+# Import python libs
+import logging
+try:
+    import json5 as json
+    HAS_JSON5 = True
+except ImportError:
+    HAS_JSON5 = False
+
+# Import salt libs
+from salt.ext.six import string_types
+
+log = logging.getLogger(__name__)
+
+# Define the module's virtual name
+__virtualname__ = 'json5'
+
+
+def __virtual__():
+    if not HAS_JSON5:
+        return (False, 'json5 module not installed')
+    return __virtualname__
+
+
+def render(json_data, saltenv='base', sls='', **kws):
+    '''
+    Accepts JSON as a string or as a file object and runs it through the JSON
+    parser.
+
+    :rtype: A Python data structure
+    '''
+    if not isinstance(json_data, string_types):
+        json_data = json_data.read()
+
+    if json_data.startswith('#!'):
+        json_data = json_data[(json_data.find('\n') + 1):]
+    if not json_data.strip():
+        return {}
+    return json.loads(json_data)