Read deleted instances during lifecycle events

This prevents us from failing to find the associated instance if
the lifecycle event happens after the instance has been deleted,
as in the case of a ... delete.

Change-Id: I819ddf8ff68edc407d7932bf43771c440f514f26
Closes-bug: #1304968
(cherry picked from commit 53ad788af6ced83bd9d6e58a25196a325d60fc4e)