Write out a clouds.yaml file

os-client-config consumes clouds.yaml files, which is now supported in
python-openstackclient and shade. It also makes for a non-envvar way of
getting config info into functional tests.

Change-Id: I1150b943f52f10d19f8434b27e8dde73a14d7843
diff --git a/clean.sh b/clean.sh
index 7db519b..86e3d4b 100755
--- a/clean.sh
+++ b/clean.sh
@@ -130,7 +130,7 @@
 fi
 
 # Clean up venvs
-DIRS_TO_CLEAN="$WHEELHOUSE ${PROJECT_VENV[@]}"
+DIRS_TO_CLEAN="$WHEELHOUSE ${PROJECT_VENV[@]} .config/openstack"
 rm -rf $DIRS_TO_CLEAN
 
 # Clean up files