Description of problem:
sssd_be take too long time to reconnect (almost more than 80 seconds) after
killing the pid of sssd_be.

Version-Release number of selected component (if applicable):
sssd-2.0.0-27.el8.x86_64

How reproducible:
Always


Steps to Reproduce:
1. Configure sssd client
2. Clear the sss cache
3. Find pid of sssd_be and do a kill -STOP `pidof sssd_be`
4. Do a new getent passwd username in another terminal or run getent passwd as
back groud process.
5. Now kill -9 `pidof sssd_be`
6. And check user lookup again.

Actual results:
sssd_be take too long time to reconnect (almost more than 80 seconds).

Expected results:
Should not take that much long time to reconnect.


Additional info:

# cat sssd.conf
    [sssd]
    config_file_version = 2
    services = nss, pam
    domains = LDAP

    [nss]
    filter_groups = root
    filter_users = root

    [pam]

    [domain/LDAP]
    debug_level=0xFFF0
    id_provider = ldap
    ldap_uri = ldap://server.example.com
    ldap_search_base = dc=example,dc=com
    ldap_tls_cacert = /etc/openldap/certs/cacert.asc