add JFS_ prefix in env (#807)

cmd/format.go

@@ -204,7 +204,7 @@ func format(c *cli.Context) error {
 		logger.Fatalf("object storage: %s", err)
 	}
 	logger.Infof("Data uses %s", blob)
-	if os.Getenv("NO_CHECK_OBJECT_STORAGE") == "" {
+	if os.Getenv("JFS_NO_CHECK_OBJECT_STORAGE") == "" {
 		if err := test(blob); err != nil {
 			logger.Fatalf("Storage %s is not configured correctly: %s", blob, err)
 		}

pkg/object/ceph.go

@@ -208,7 +208,7 @@ func newCeph(endpoint, cluster, user string) (ObjectStorage, error) {
 	if err != nil {
 		return nil, fmt.Errorf("Can't create connection to cluster %s for user %s: %s", cluster, user, err)
 	}
-	if os.Getenv("NO_CHECK_OBJECT_STORAGE") == "" {
+	if os.Getenv("JFS_NO_CHECK_OBJECT_STORAGE") == "" {
 		if err := conn.ReadDefaultConfigFile(); err != nil {
 			return nil, fmt.Errorf("Can't read default config file: %s", err)
 		}