Summary: Add helper for inserting a value after another value in an

OrderedDict (or Django's SortedDict)
 - Legacy-Id: 8719

ietf/utils/ordereddict.py

@@ -0,0 +1,13 @@
+def insert_after_in_ordered_dict(dictionary, key, value, after):
+    # there's no insert in ordered dict so re-add entries after confirm_acronym instead
+    dictionary[key] = value
+
+    reorder = False
+    l = dictionary.items() # don't mutate the dict while looping
+    for k, v in l:
+        if reorder and k != key:
+            del dictionary[k]
+            dictionary[k] = v
+
+        if k == after:
+            reorder = True