Security update for util-linux (moderate)

This update for util-linux fixes the following issues:

This non-security issue was fixed:

• CVE-2018-7738: bash-completion/umount allowed local users to gain
  privileges by embedding shell commands in a mountpoint name, which was
  mishandled during a umount command by a different user (bsc#1084300).

These non-security issues were fixed:

• Fixed crash loop in lscpu (bsc#1072947).
• Fixed possible segfault of umount -a
• Fixed mount -a on NFS bind mounts (bsc#1080740).
• Fixed lsblk on NVMe (bsc#1078662).

This update was imported from the SUSE:SLE-12-SP3:Update update project.