for sudo >= 1.8.23:
1. create a user called test
2. set passwd for user test, add test to wheels group and set wheels group in /etc/sudoers:
%wheel  ALL=(ALL)       NOPASSWD:ALL
3. login as test
4. open another terminal and input wrong password 3 times to trigger faillock (even input right password, you can't login)
5. execute `sudo ls` as user test, then the faillock disappear


/etc/sudoers:
Defaults   !visiblepw

Defaults    env_reset
Defaults    env_keep =  "COLORS DISPLAY HOSTNAME HISTSIZE KDEDIR LS_COLORS"
Defaults    env_keep += "MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE"
Defaults    env_keep += "LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES"
Defaults    env_keep += "LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE"
Defaults    env_keep += "LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY"

Defaults    secure_path = /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

root    ALL=(ALL)       ALL
%wheel  ALL=(ALL)       NOPASSWD:ALL

#includedir /etc/sudoers.d


/etc/pam.d/sudo:
#%PAM-1.0
auth       include      system-auth
account    include      system-auth
password   include      system-auth
session    optional     pam_keyinit.so revoke
session    required     pam_limits.so
session    include      system-auth


/etc/pam.d/system-auth:
#%PAM-1.0
# User changes will be destroyed the next time authconfig is run.
auth        required      pam_env.so
auth        required      pam_faillock.so preauth audit deny=3 even_deny_root unlock_time=300
-auth        sufficient    pam_fprintd.so
auth        sufficient    pam_unix.so nullok try_first_pass
-auth        sufficient    pam_sss.so use_first_pass
auth        [default=die] pam_faillock.so authfail audit deny=3 even_deny_root unlock_time=300
auth        sufficient    pam_faillock.so authsucc audit deny=3 even_deny_root unlock_time=300
auth        requisite     pam_succeed_if.so uid >= 1000 quiet_success
auth        required      pam_deny.so

account     required      pam_unix.so
account     sufficient    pam_localuser.so
account     sufficient    pam_succeed_if.so uid < 1000 quiet
-account     [default=bad success=ok user_unknown=ignore] pam_sss.so
account     required      pam_permit.so

password    requisite     pam_pwquality.so minlen=8 minclass=3 enforce_for_root try_first_pass local_users_only retry=3 dcredit=0 ucredit=0 lcredit=0 ocredit=0
password    required      pam_pwhistory.so use_authtok remember=5 enforce_for_root
password    sufficient    pam_unix.so sha512 shadow nullok try_first_pass use_authtok
-password    sufficient    pam_sss.so use_authtok
password    required      pam_deny.so

session     optional      pam_keyinit.so revoke
session     required      pam_limits.so
-session     optional      pam_systemd.so
session     [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session     required      pam_unix.so
-session     optional      pam_sss.so