This update for git-review fixes the following issues:

Version update to 1.28.0 (bsc#1134089):

* Support for auto-configuration of topic names based on the
presence of keywords in the commit message is removed. Previously,
keywords such as bug, bp or lp followed by a number would result
in branch names containing the associated number, e.g. bug/123.
This feature was OpenStack specific, was a frequent source of bugs
and clearly wasn’t being used that often, given that StoryBoard
is a thing now and no one had updated this feature to handle that metadata.

* Fixed usepushurl to work when a read-only mirror being used as origin does not contain refs/changes from gerrit.

Update to 1.27.0:

* Work with python3