The commit of unifying the Reva Client config introduced some backwards
incompatible changes to the config structures and yaml config tags. For
the "thumbnails", "webdav" and "notifications" service. This reverts the
changes on the service and introduces TLS options in a backwards
compatible manner.
Consolidate all services to use the Reva config struct for the shared package.
This works because all services (except 'notifications', 'thumbnails' and
'webdav') where using the same config keys and environment variables for
setting the reva gateway.
* Add a Ref option to SearchRequest, e.g. for limiting the search to a space
* Enable REPORT requests for /dav/spaces URLs
* Limit the search to the according space in case of /dav/spaces searches
* Add changelog
* Adapt expected failures
* Comment exported functions
This avoids using a public global variable. It allows us to initialize
the default client a bit later (outside of init()). That way we can e.g.
properly initialize the in-memory registry.
