Remove cap on cmd23.3.0

After [1] and [2], there is no need to cap the version of cmd2.

This will also fix the current "rally_openstack" import problems
experienced in the CI: http://paste.openstack.org/show/794701/

[1]https://review.opendev.org/#/c/712591/
[2]https://review.opendev.org/#/c/734629/

Change-Id: Ie15e3f5058c4bd104978d9f31f0590d6c795024b

2 files changed, 11 insertions, 1 deletions

diff --git a/cliff/interactive.py b/cliff/interactive.py
index 517061e..aca7233 100644
--- a/cliff/interactive.py
+++ b/cliff/interactive.py
@@ -158,6 +158,16 @@ class InteractiveApp(cmd2.Cmd):
                 ]
 
     def precmd(self, statement):
+        """Hook method executed just before the command is executed by
+        :meth:`~cmd2.Cmd.onecmd` and after adding it to history.
+
+        :param statement: subclass of str which also contains the parsed input
+        :return: a potentially modified version of the input Statement object
+        """
+        # NOTE(mordred): The above docstring is copied in from cmd2 because
+        # current cmd2 has a docstring that sphinx finds if we don't override
+        # it, and it breaks sphinx.
+
         # Pre-process the parsed command in case it looks like one of
         # our subcommands, since cmd2 does not handle multi-part
         # command names by default.
diff --git a/requirements.txt b/requirements.txt
index c5f88ce..a603e32 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
-cmd2>=0.8.0,!=0.8.3,<0.9.0 # MIT
+cmd2>=0.8.0,!=0.8.3 # MIT
 PrettyTable<0.8,>=0.7.2 # BSD
 pyparsing>=2.1.0 # MIT
 six>=1.10.0 # MIT