Add helper which verifies the response token is valid and matches the
expected value. Merges token_type and response_get_token.
Signed-off-by: NJon Derrick <jonathan.derrick@intel.com>
Reviewed-by: NScott Bauer <scott.bauer@intel.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NJens Axboe <axboe@fb.com>