Bug#940848: nfs-utils:CVE-2019-3689: root-owned files stored in insecure /var/lib/nfs

[Sylvain Beucler]

Upstream commit:
https://git.linux-nfs.org/?p=steved/nfs-utils.git;a=commitdiff;h=fee2cc29e888f2ced6a76990923aef19d326dc0e