The permissions created in convertRepo use a minimal perm.AccessModeRead instead of
correctly computing the permission for the repository. This incorrect permission is
then reported to the user.
I do not believe that reporting the permissions is helpful and therefore I propose
we simply null these out. The user can check their permissions using a different
endpoint.
Fix#19759
Signed-off-by: Andrew Thornton <art27@cantab.net>
a9af93cb21