Tools: qfs tool add client parameters description to help message.
Meta server: remove incorrect lease time conditional prefix with single chunk read lease acquisition, always return chunk server and chunk access tokens with authentication enabled regardless of the lease time value, in order to allow client to access chunk server without creating read lease in the case where the client needs to obtain the last chunk size in order to determine logical file size. Add chunk access count to read lease RPC show method in order to facilitate debugging.