[SSSD] [sssd PR#947][comment] tests: fix race conditions in integration tests

[pbrezina]

URL: https://github.com/SSSD/sssd/pull/947
Title: #947: tests: fix race conditions in integration tests

pbrezina commented:
"""
* https://github.com/SSSD/sssd/pull/956 Files provider.
* https://github.com/SSSD/sssd/pull/956 Enumeration.

"""

See the full comment at https://github.com/SSSD/sssd/pull/947#issuecomment-562097351