vm: Don't print ticket value to stdout
vm: Don't print ticket value to stdout

When G_MESSAGES_DEBUG=libgovirt is set, the ticket value would be
printed to stdout. Since it's a short-lived password used to access the
VM display, it's better not to print it.

https://bugzilla.redhat.com/show_bug.cgi?id=1216118

etrunko/libgovirt,GNOME/libgovirt,etrunko/libgovirt