Fix RuntimeError when showing project which has extra properties

If you use python3, items() returns iterator which is not allowed to
remove item during iteration. Fix to iterate by copied list.

Change-Id: I64c037d04e2b127d8f19f56cab65122af89a7200
Closes-Bug: 1740232

openstackclient/identity/v2_0/project.py

@@ -289,7 +289,7 @@ class ShowProject(command.ShowOne):
         # the API has and handle the extra top level properties.
         reserved = ('name', 'id', 'enabled', 'description')
         properties = {}
-        for k, v in info.items():
+        for k, v in list(info.items()):
             if k not in reserved:
                 # If a key is not in `reserved` it's a property, pop it
                 info.pop(k)

releasenotes/notes/bug-1740232-91ad72c2ac165f35.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Fix RuntimeError in ``project show`` command running under Python 3.
+    [Bug `1740232 <https://bugs.launchpad.net/python-openstackclient/+bug/1740232>`_]