Add __iter__ and next options to doc/conf.py

This allows sphinx to build without autodoc errors on mock objects
that should be iterable.

Also added versionadded tags to the snapper module and state.

doc/conf.py

@@ -49,6 +49,13 @@ class Mock(object):
         else:
             data = Mock(mapping=self.__mapping)
         return data
+
+    def __iter__(self):
+        return self
+
+    def next(self):
+        raise StopIteration
+
 # pylint: enable=R0903
 
 MOCK_MODULES = [

salt/modules/snapper.py

@@ -2,6 +2,8 @@
 '''
 Module to manage filesystem snapshots with snapper
 
+.. versionadded:: 2016.11.0
+
 :codeauthor:    Duncan Mac-Vicar P. <dmacvicar@suse.de>
 :codeauthor:    Pablo Suárez Hernández <psuarezhernandez@suse.de>
 

salt/states/snapper.py

@@ -3,6 +3,8 @@
 Managing implicit state and baselines using snapshots
 =====================================================
 
+.. versionadded:: 2016.11.0
+
 Salt can manage state against explicitly defined state, for example
 if your minion state is defined by: