cluster: fix wg1.conf generator

Signed-off-by: Nagy Károly Gábriel <k@jpi.io>

pkg/cluster/rings.go

@@ -6,6 +6,7 @@ import (
 	"net/netip"
 	"strconv"
 
+	"darvaza.org/core"
 	"git.jpi.io/amery/jpictl/pkg/rings"
 	"git.jpi.io/amery/jpictl/pkg/wireguard"
 )