INTG_TESTS: Add one more test for filtered out users/groups
The added test is quite simple and basically ensures that when some
shortcut is taken in the cache_req_send() SSSD still filters out the
already cached users/groups.
The real situation the test tries to test is:
- getent passwd 1002
- sleep(2)
- getent passwd 1002
- getent group 2002
- sleep(2)
- getent group 2002
(Considering entry_negative_timeout = 1 in [nss] section of sssd.conf).
Related:
https://pagure.io/SSSD/sssd/issue/3362
Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>
(cherry picked from commit 13205258cc17d3833558244251f5adbc98cf34e5)