Use install_venv_common.py from oslo.
This syncs install_venv_common.py from oslo and reworks the
tools/install_venv.py script to use the new library.
Change-Id: I817ca5f317dc360e787f42697ad717ac77c1ae24
diff --git a/openstack-common.conf b/openstack-common.conf
index a75279f..0c9e43e 100644
--- a/openstack-common.conf
+++ b/openstack-common.conf
@@ -1,7 +1,7 @@
[DEFAULT]
# The list of modules to copy from openstack-common
-modules=setup,cfg,iniparser
+modules=setup,cfg,iniparser,install_venv_common
# The base module to hold the copy of openstack.common
base=tempest