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>

storage/pkg/command/users.go

@@ -19,7 +19,7 @@ import (
 	"github.com/urfave/cli/v2"
 )
 
-// Users is the entrypoint for the sharing command.
+// Users is the entrypoint for the users command.
 func Users(cfg *config.Config) *cli.Command {
 	return &cli.Command{
 		Name:  "users",