Added sample files for the Image Service

Added glance-api-paste.ini, glance-api.conf, glance-policy.json,
glance-registry-paste.ini,glance-registry.conf, and
glance-scrubber.conf file references (glance project). Placed
under new section.

Change-Id: Ib5e6d3e640af8c23972d7f763d1ab081f5a00fbb
Partial-Bug: #1281348
Merge "Added sample files for the Image Service"