storageminer: separate env var for storage repo

cmd/lotus-storage-miner/main.go

@@ -31,7 +31,7 @@ func main() {
 			},
 			&cli.StringFlag{
 				Name:    "storagerepo",
-				EnvVars: []string{"LOTUS_PATH"},
+				EnvVars: []string{"LOTUS_STORAGE_PATH"},
 				Hidden:  true,
 				Value:   "~/.lotusstorage", // TODO: Consider XDG_DATA_HOME
 			},

cmd/lotus-storage-miner/run.go

@@ -9,6 +9,13 @@ import (
 var RunCmd = &cli.Command{
 	Name:  "run",
 	Usage: "Start a lotus storage miner process",
+	Flags: []cli.Flag{
+		&cli.StringFlag{
+			Name:    "storagerepo",
+			EnvVars: []string{"LOTUS_STORAGE_PATH"},
+			Value:   "~/.lotusstorage", // TODO: Consider XDG_DATA_HOME
+		},
+	},
 	Action: func(cctx *cli.Context) error {
 		api, err := lcli.GetAPI(cctx)
 		if err != nil {