[SSSD] [sssd PR#172][synchronized] authtok: fix tests on big-endian

[sumit-bose]

   URL: https://github.com/SSSD/sssd/pull/172
Author: sumit-bose
 Title: #172: authtok: fix tests on big-endian
Action: synchronized

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/172/head:pr172
git checkout pr172