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After installed pam_yubico, and adding the following line in
/etc/pam.d/common-auth, running `sudo pam-config --update`�fails with
`/etc/pam.d/common-auth-pc: Unknown module pam_yubico.so, ignored!` 

The module never appears in the --list-modules either.

Reproducible: Always

Steps to Reproduce:
1. sudo zypper in pam_yubico
2. sudo ldconfig (or reboot)
3. Amend /etc/pam.d/common-auth-pc to add pam_yubico as requirement
4. Run pam-config --update and get ignore message.
Actual Results:  
/etc/pam.d/common-auth-pc: Unknown module pam_yubico.so, ignored!

Expected Results:  
Module loads and I�can use my yubikey with pam.