Merge pull request #581 from github/jianghao0718-legacy-restore

In legacy mode we should use ghe-import-mysql

Author: jianghao0718

share/github-backup-utils/ghe-restore-mysql

@@ -79,7 +79,7 @@ else
     exit 2
   else
     # legacy mode
-    IMPORT_MYSQL="unpigz | ghe-import-mysql-mysqldump"
+    IMPORT_MYSQL="unpigz | ghe-import-mysql"
     GHE_RESTORE_HOST=$GHE_HOSTNAME
   fi
 fi