Bug#1142693: greetd: Regression: keyring is not automatically opened at login

[Marco Mattiolo]

Additional reference, Alpine/pmOS provide the auth&session lines for 
both gnome-keyring and kwallet inside linux-pam package

https://gitlab.alpinelinux.org/alpine/aports/-/blob/master/main/linux-pam/login.pamd
https://gitlab.alpinelinux.org/alpine/aports/-/blob/master/main/linux-pam/base-auth.pamd
https://gitlab.alpinelinux.org/alpine/aports/-/blob/master/main/linux-pam/base-session.pamd