This update for util-linux and shadow fixes the following issues:

util-linux:

- Fixed an issue where PATH settings in /etc/default/su being ignored (bsc#1121197)
- Prevent outdated pam files (bsc#1082293).
- Do not trim read-only volumes (bsc#1106214).
- Integrate pam_keyinit pam module to login (bsc#1081947).
- Perform one-time reset of /etc/default/su (bsc#1121197).
- Fix problems in reading of login.defs values (bsc#1121197)
- libmount: To prevent incorrect behavior, recognize more pseudofs and netfs (bsc#1122417).
- raw.service: Add RemainAfterExit=yes (bsc#1135534).
- agetty: Return previous response of agetty for special characters (bsc#1085196, bsc#1125886)
- Fix /etc/default/su comments and create /etc/default/runuser (bsc#1121197).

shadow:

- Fixed an issue where PATH settings in /etc/default/su being ignored (bsc#1121197)
- Hardening for su wrappers (bsc#353876)

This update was imported from the SUSE:SLE-15:Update update project.