[SSSD] [sssd PR#284][opened] krb5: accept changed principal if krb5_canonicalize=True

[sumit-bose]

   URL: https://github.com/SSSD/sssd/pull/284
Author: sumit-bose
 Title: #284: krb5: accept changed principal if krb5_canonicalize=True
Action: opened

PR body:
"""
Currently SSSD accepts significant changes in the principal only if
krb5_use_enterprise_principal=True. But canonicalization can lead to
similar changes so they should be accepted in this case as well.

Resolves https://pagure.io/SSSD/sssd/issue/3408
"""

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/284/head:pr284
git checkout pr284