bb47812765
Add a '--all-tenants' option to the image-list command. This adds 'is_public=None' to the query string passed to the server, and for an admin user results in a listing of all images present on the server irrespective of owner or public values. Addresses bug 1201787. Change-Id: I38dd0752a31ebea84f16b786d205e82eba1a96bc