revert storage, remove tracing.service and bring back common

storage/pkg/command/root.go

@@ -3,6 +3,7 @@ package command
 import (
 	"os"
 
+	"github.com/owncloud/ocis/ocis-pkg/log"
 	"github.com/owncloud/ocis/ocis-pkg/version"
 	"github.com/owncloud/ocis/storage/pkg/config"
 	"github.com/urfave/cli/v2"
@@ -22,10 +23,8 @@ func Execute(cfg *config.Config) error {
 				Email: "support@owncloud.com",
 			},
 		},
-
 		Before: func(c *cli.Context) error {
-			cfg.Service.Version = version.String
-			return ParseConfig(c, cfg, "_")
+			return ParseConfig(c, cfg, "storage")
 		},
 
 		Commands: []*cli.Command{
@@ -36,7 +35,6 @@ func Execute(cfg *config.Config) error {
 			AppProvider(cfg),
 			AuthBasic(cfg),
 			AuthBearer(cfg),
-			AuthMachine(cfg),
 			Sharing(cfg),
 			StorageUsers(cfg),
 			StorageShares(cfg),
@@ -58,3 +56,14 @@ func Execute(cfg *config.Config) error {
 
 	return app.Run(os.Args)
 }
+
+// NewLogger initializes a service-specific logger instance.
+func NewLogger(cfg *config.Config) log.Logger {
+	return log.NewLogger(
+		log.Name("storage"),
+		log.Level(cfg.Log.Level),
+		log.Pretty(cfg.Log.Pretty),
+		log.Color(cfg.Log.Color),
+		log.File(cfg.Log.File),
+	)
+}