[SSSD] [sssd PR#556][comment] COVERITY: Add coverity support

[pbrezina]

URL: https://github.com/SSSD/sssd/pull/556
Title: #556: COVERITY: Add coverity support

pbrezina commented:
"""
Ok, I requested access.
"""

See the full comment at https://github.com/SSSD/sssd/pull/556#issuecomment-385371607