ctlsock: raise timeout to 10 seconds
ctlsock: raise timeout to 10 seconds

There was at least one user who hit the earlier 1 second timeout. Raise to 10
seconds which ought to be enough for anyone.

Fixes https://github.com/rfjakob/gocryptfs/issues/683

rfjakob/gocryptfs,rfjakob/gocryptfs,rfjakob/gocryptfs,rfjakob/gocryptfs