cluster: use rings.ZoneID and rings.NodeID types

Signed-off-by: Alejandro Mery <amery@jpi.io>

pkg/cluster/cluster_scan.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 
 	"darvaza.org/core"
+	"git.jpi.io/amery/jpictl/pkg/rings"
 )
 
 const (
@@ -114,7 +115,7 @@ func (m *Cluster) scanMachines(opts *ScanOptions) error {
 
 func (m *Cluster) scanZoneIDs(_ *ScanOptions) error {
 	var hasMissing bool
-	var lastZoneID int
+	var lastZoneID rings.ZoneID
 
 	m.ForEachZone(func(z *Zone) bool {
 		switch {