Add missing 'connect' wrapper

This was missed in change Ib789cd4d11a3d5dd01fcdb99822025b11bbc234e
("Don't rely on implicit autocommit")

Change-Id: I9ec27650ae5e36099a6d2b2d59bb66cd820e8ffc
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>