install OSC with py3 by default

Add python-openstackclient to the list of packages installed under
Python 3 by default, so that jobs running with Python 3 exercise the
client that way.

Change-Id: I9778a6810bb3e4850132cfc19e583d50fed23ef5
Signed-off-by: Doug Hellmann <doug@doughellmann.com>
diff --git a/stackrc b/stackrc
index 95f017b..9673074 100644
--- a/stackrc
+++ b/stackrc
@@ -109,7 +109,7 @@
 # base name of the directory from which they are installed. See
 # enable_python3_package to edit this variable and use_python3_for to
 # test membership.
-export ENABLED_PYTHON3_PACKAGES="nova,glance,cinder,uwsgi"
+export ENABLED_PYTHON3_PACKAGES="nova,glance,cinder,uwsgi,python-openstackclient"
 
 # Explicitly list services not to run under Python 3. See
 # disable_python3_package to edit this variable.