Fix dependencies for activity-dev

* modules/openstack_project/manifests/activity_dev.pp: Add missing
parent directory and replace incorrect dependency on a non-puppeted
www-data user account with one on the apache2 package instead.

Change-Id: Ie1dceb9c5d83ed11f9aa9aebd2a18d2ee91b44af
Merge "Fix dependencies for activity-dev"