use pam_faillock rather than deprecated pam_tally2

[bcg62]

Is your feature request related to a problem? Please describe.
Since Linux-PAM 1.4.0 (8th June, 2020) pam_tally and pam_tally2 were deprecated and pam_faillock was introduced, version 1.5.0 (10th November, 2020) removed pam_tally and pam_tally2

Describe the solution you'd like
support for pam_faillock while maintaining support for pam_tally2