(cd devstack && git checkout "${branch}")
sed -e 's/#.*//' devstack/files/rpms/general | xargs yum install -y
+sudo ls -al /usr/lib/py*
+
+sudo rm -rf /usr/lib/python3/dist-packages/yaml
+sudo rm -rf /usr/lib/python3/dist-packages/PyYAML-*
+sudo rm -rf /usr/lib/python3.4/dist-packages/yaml
+sudo rm -rf /usr/lib/python3.4/dist-packages/PyYAML-*
+
+sudo rm -rf /usr/lib/python3/site-packages/yaml
+sudo rm -rf /usr/lib/python3/site-packages/PyYAML-*
+sudo rm -rf /usr/lib/python3.4/site-packages/yaml
+sudo rm -rf /usr/lib/python3.4/site-packages/PyYAML-*
+
base_url=https://github.com/openstack/
for proj in $projs
do