use new python_packages attributes from -common

*_python_packages attributes are being moved to -common in order to
remove the duplication from all the cookbooks which are using them

Change-Id: I03d0acf12d4c53952498beeaefad9f3b237ccb9d
Implements: blueprint move-python-db-client-attrs-to-common
Merge "use new python_packages attributes from -common"