This change replaces the existing boolean 'is_public' column for
the 'images' table with enum 'visibility' column featuring the
four explicit visibility values - public, private, shared,
and community.
This change also implements and enables all backend code to
utilize the new values.
Co-Authored-By: Timothy Symanczyk <timothy_symanczyk@symantec.com>
Co-Authored-By: Dharini Chandrasekar <dharini.chandrasekar@intel.com>
Implements: blueprint community-level-v2-image-sharing
Closes-Bug: #1394299
Closes-Bug: #1452443
Depends-On: I6e3268f3712cbc0aadb51d204c694023b92d55a5
Change-Id: I94bc7708b291ce37319539e27b3e88c9a17e1a9f
265659e8c3