Use embeddable ocdav go micro service (#3397)

* allow proxy to route to micro service

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* use go micre ocdav service instead of reva frontend

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* add missing gateway default config

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* update reva branch for testing

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* add changelog

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* add missing comands

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* bump reva version

Signed-off-by: jkoberg <jkoberg@owncloud.com>

* tidy

Signed-off-by: jkoberg <jkoberg@owncloud.com>

* bump reva again

Signed-off-by: jkoberg <jkoberg@owncloud.com>

* a blind mans config change

Signed-off-by: jkoberg <jkoberg@owncloud.com>

* add ocdav to must start extensions

Signed-off-by: jkoberg <jkoberg@owncloud.com>

* fail when neither backend nor service is set

Signed-off-by: jkoberg <jkoberg@owncloud.com>

Co-authored-by: jkoberg <jkoberg@owncloud.com>

ocis/pkg/runtime/service/service.go

@@ -108,6 +108,7 @@ func NewService(options ...Option) (*Service, error) {
 	s.ServicesRegistry["web"] = web.NewSutureService
 	s.ServicesRegistry["webdav"] = webdav.NewSutureService
 	s.ServicesRegistry["storage-frontend"] = storage.NewFrontend
+	s.ServicesRegistry["ocdav"] = storage.NewOCDav
 	s.ServicesRegistry["storage-gateway"] = storage.NewGateway
 	s.ServicesRegistry["storage-userprovider"] = storage.NewUserProvider
 	s.ServicesRegistry["storage-groupprovider"] = storage.NewGroupProvider