Description of problem:
sssctl config-check command does not give proper error messages with line
numbers while checking starting and ending square brackets in domain, sssd and
service sections.


Version-Release number of selected component (if applicable):
# rpm -qa sssd sssd-tools
sssd-tools-2.2.3-3.el8.x86_64
sssd-2.2.3-3.el8.x86_64


How reproducible:
Always


Steps to Reproduce:
1. Add sssd.conf with missing ending square brackets for sssd section.
2. # cat /etc/sssd/sssd.conf
[sssd
config_file_version = 2
services = nss, pam
domains = example1

[domain/example1]
ldap_search_base = dc=example,dc=test
id_provider = ldap
auth_provider = ldap
ldap_user_home_directory = /home/%u
ldap_uri = ldaps://ci-vm-10-0-153-162.hosted.upshift.rdu2.redhat.com
ldap_tls_cacert = /etc/openldap/cacerts/cacert.pem
use_fully_qualified_names = True
debug_level = 9

3. Run # sssctl config-check

Actual results:
Not showing the exact error message with a line number.

# sssctl config-check
(Tue Dec 10 08:49:12:721419 2019) [sssd] [sss_ini_parse] (0x0010): Failed to
parse configuration. Error 5.
(Tue Dec 10 08:49:12:721468 2019) [sssd] [sss_ini_parse] (0x0010): Errors
detected while parsing: /etc/sssd/sssd.conf
(Tue Dec 10 08:49:12:721481 2019) [sssd] [sss_ini_read_sssd_conf] (0x0010):
Failed to parse configuration.
Failed to load configuration configuration from /etc/sssd/sssd.conf.


Expected results:
In expected error messages, we should get line number/s with proper error
messages like no closing bracket.

[root@vm-idm-002 ~]# sssctl config-check
(Tue Dec 10 19:21:12:300456 2019) [sssd] [sss_ini_get_config] (0x0010): Failed
to parse configuration. Error 5.
(Tue Dec 10 19:21:12:300625 2019) [sssd] [sss_ini_get_config] (0x0010): Errors
detected while parsing: /etc/sssd/sssd.conf
(Tue Dec 10 19:21:12:300689 2019) [sssd] [sss_ini_config_print_errors]
(0x0010): Error (2) on line 1: No closing bracket.
(Tue Dec 10 19:21:12:300731 2019) [sssd] [sssctl_config_check] (0x0010): Failed
to load configuration


Additional info:
Expect error message with the line number for missing starting bracket for any
section.