cli: restored snapshot create --hostname and --username flags

cli/command_snapshot_create.go

@@ -27,6 +27,8 @@
 	snapshotCreateDescription             = snapshotCreateCommand.Flag("description", "Free-form snapshot description.").String()
 	snapshotCreateForceHash               = snapshotCreateCommand.Flag("force-hash", "Force hashing of source files for a given percentage of files [0..100]").Default("0").Int()
 	snapshotCreateParallelUploads         = snapshotCreateCommand.Flag("parallel", "Upload N files in parallel").PlaceHolder("N").Default("0").Int()
+	snapshotCreateHostname                = snapshotCreateCommand.Flag("hostname", "Override local hostname.").String()
+	snapshotCreateUsername                = snapshotCreateCommand.Flag("username", "Override local username.").String()
 )
 
 func runBackupCommand(ctx context.Context, rep *repo.Repository) error {
@@ -76,6 +78,14 @@ func runBackupCommand(ctx context.Context, rep *repo.Repository) error {
 			UserName: rep.Username,
 		}
 
+		if h := *snapshotCreateHostname; h != "" {
+			sourceInfo.Host = h
+		}
+
+		if u := *snapshotCreateUsername; u != "" {
+			sourceInfo.UserName = u
+		}
+
 		if err := snapshotSingleSource(ctx, rep, u, sourceInfo); err != nil {
 			finalErrors = append(finalErrors, err.Error())
 		}
@@ -89,7 +99,7 @@ func runBackupCommand(ctx context.Context, rep *repo.Repository) error {
 }
 
 func snapshotSingleSource(ctx context.Context, rep *repo.Repository, u *snapshotfs.Uploader, sourceInfo snapshot.SourceInfo) error {
-	printStdout("Snapshotting %v ...\n", sourceInfo)
+	printStderr("Snapshotting %v ...\n", sourceInfo)
 
 	t0 := time.Now()