Description of problem:
[rule/allowed_sssd_options]: Attribute 'try_inotify' is not allowed in section
'sssd'. Check for typos.

Version-Release number of selected component (if applicable):
sssd-1.15.2-50.el7

How reproducible:
Always

Steps to Reproduce:
1. add try_inotify option to the [sssd] section

Actual results:
(Mon Sep 11 15:02:52:190955 2017) [sssd] [sss_ini_call_validators] (0x0020):
[rule/allowed_sssd_options]: Attribute 'try_inotify' is not allowed in section
'sssd'. Check for typos.

Additional info:
It does correctly set the option.

[sssd]
services = sudo, nss, ifp, pam, ssh
domains = example.local
try_inotify = false

(Mon Sep 11 15:02:52:190955 2017) [sssd] [sss_ini_call_validators] (0x0020):
[rule/allowed_sssd_options]: Attribute 'try_inotify' is not allowed in section
'sssd'. Check for typos.
(Mon Sep 11 15:02:52:191688 2017) [sssd] [sss_confdb_create_ldif] (0x0400):
Processing attribute [try_inotify]
(Mon Sep 11 15:02:52:191706 2017) [sssd] [sss_confdb_create_ldif] (0x4000):
try_inotify: false


[sssd]
services = sudo, nss, ifp, pam, ssh
domains = example.local
try_inotify = true

(Mon Sep 11 15:05:02:859450 2017) [sssd] [sss_ini_call_validators] (0x0020):
[rule/allowed_sssd_options]: Attribute 'try_inotify' is not allowed in section
'sssd'. Check for typos.
(Mon Sep 11 15:05:02:860188 2017) [sssd] [sss_confdb_create_ldif] (0x0400):
Processing attribute [try_inotify]
(Mon Sep 11 15:05:02:860206 2017) [sssd] [sss_confdb_create_ldif] (0x4000):
try_inotify: true