Why we should include this into the repository? This allows for Kerberos authentication and/or obtaining a Kerberos ticket on login. Password changes are also supported. This is useful for using Kerberos as a single sign-on mechanism.
Open source? Yes, under the BSD-3-Clause or GPL licence
How many users do you anticipate will use this software? As many as use SSO via Kerberos.
Link to source tarball/zip file: https://archives.eyrie.org/software/kerberos/pam-krb5-4.7.tar.xz