From 1884c307a9502393d275e0d5c5b2e56343792908 Mon Sep 17 00:00:00 2001
From: Corey Bryant <corey.bryant@canonical.com>
Date: Thu, 4 Oct 2018 15:29:36 -0400
Subject: [PATCH] python3: Ensure ConfigOpts __iter__ uses list(d.keys())

d.keys() no longer returns a copy of the keys in Python 3.
This is part of PEP 3106.

Change-Id: Ie4897109c87d6dc2952c2eb35b83fe368fb31803
Closes-Bug: #1796163
---
 oslo_config/cfg.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/oslo_config/cfg.py b/oslo_config/cfg.py
index e42e52e9..ca3f4d02 100644
--- a/oslo_config/cfg.py
+++ b/oslo_config/cfg.py
@@ -2649,7 +2649,8 @@ class ConfigOpts(collections.Mapping):
 
     def __iter__(self):
         """Iterate over all registered opt and group names."""
-        for key in itertools.chain(self._opts.keys(), self._groups.keys()):
+        for key in itertools.chain(list(self._opts.keys()),
+                                   list(self._groups.keys())):
             yield key
 
     def __len__(self):