Updated openstack/openstack
Project: openstack/horizon  56ce8b02f7adb2a111ac384cd709fac2111854e8
null
Clarify description string for image metric

This metric seems to have an existential crisis.
Change to more succinct "Image existence check"

Change-Id: I953c55214e73bb93c452b25f97960e9637f1008c
Closes-Bug: #1292937