Ensure that stack home is owned by stack
Ensure that stack home is owned by stack

The role that sets up the user and its home folder must ensure that
the home folder is owned by stack as well.

Change-Id: I2e72d7b9d68a2a14f8a148ef82cbb3f569bd1cea

noironetworks/devstack,nawawi/openstack,group-policy/devstack,dtroyer/devstack,noironetworks/devstack,openstack-dev/devstack,openstack-dev/devstack,dtroyer/devstack,nawawi/openstack,group-policy/devstack