Fix install of ansible-odl in Packer builds

Ansible is executed by non-root, so it looks in dirs based on that user.
If the role is installed by root it will be missed and provisioning will
fail.

Change-Id: I2dcbf581acb6f9e11720798bc67b5d775f51761e
Signed-off-by: Daniel Farrell <dfarrell@redhat.com>