shared: AFS is also a network filesystem

(cherry picked from commit ba89821c10)
(cherry picked from commit 3c350019fe)

src/shared/util.c

@@ -1587,6 +1587,7 @@ bool chars_intersect(const char *a, const char *b) {
 
 bool fstype_is_network(const char *fstype) {
         static const char table[] =
+                "afs\0"
                 "cifs\0"
                 "smbfs\0"
                 "sshfs\0"