Add CSP headers for img-src and worker-src
Add CSP headers for img-src and worker-src

These are needed for running skyline dashboard in the future

Change-Id: I651a86780ef476eb5f164f9ba3eef72b2bab2781

openstack/openstack-ansible,openstack/openstack-ansible,stackforge/os-ansible-deployment,stackforge/os-ansible-deployment