Bug#1021563: also exclude fuse.gocryptfs from index

[VA]

Package: plocate
Version: 1.1.16-1

In /etc/updatedb.conf 's PRUNEFS option, just like "fuse.cryfs" and 
"fuse.encfs" are present, PRUNEFS should also contain "fuse.gocryptfs" 
to prevent indexing (and leaking!) files from an encrypted filesystem,