Backport #17460
There is a small bug in the way that repo access is checked in
repoAssignment: Accessibility is checked by checking if the user has a
marked access to the repository instead of checking if the user has any
team granted access.
This PR changes this permissions check to use HasAccess() which does the
correct test. There is also a fix in the release api ListReleases where
it should return draft releases if the user is a member of a team with
write access to the releases.
The PR also adds a testcase.
Signed-off-by: Andrew Thornton <art27@cantab.net>
Handle case where an orginization is private but a user who is not a
member of the orgninization has been added as a collaborator of a repo
within that org
Fixes#6962
* fix org visibility bug
* fix permission check
* add integration tests
* fix tests
* change test user name for easier maintainance and fix test
* fix test git repo name
