Changed default: $connect_only_to_primary_nodes = 1
Changed default: $connect_only_to_primary_nodes = 1

As this greatly reduces load on the fonera I make this the default when
using together with tinc 1.0.12+git, even if it breaks communication with
older tinc nodes for these clients.

ryd/chaosvpn,ryd/chaosvpn,ryd/chaosvpn