This commit updates several places where image information is processed
and extends support for the 'community' image visibility value.
Some support did exist already, which was mostly just the main Images
tab of the dashboard, but this commit also includes support for:
- image name in the instances list/details
- 'Community' visibility label in the Images tab
- Listing of community images in launch instance wizard
Closes-Bug: #1779250
Change-Id: Iedea0b7d20313837a72a2759511251a7bb324869
d641e6d105