We were using stretchr/testify and test-go/testify inconsitently and
sometimes mixed in the same tests. This can cause very strange issue,
e.g when using things like mock.MatchedBy().
This moves all our code to stretchr/testify, which seems to be far
more active and maintained then test-go/testify.
* Handle SpaceShared events
* Adapt to changed ID in the SpaceShared event
* Handle the SpaceUnshared events
* Handle the SpaceUpdated event
* update reva to latest edge
* fix typo
* Disable cyclomatic complexity check for StartAuditLogger
Co-authored-by: Michael Barz <mbarz@owncloud.com>
