Cloudwatch: Add missing AWS regions (#75392)

pkg/tsdb/cloudwatch/constants/metrics.go

@@ -538,18 +538,23 @@ func Regions() RegionsSet {
 		"ap-northeast-2": {},
 		"ap-northeast-3": {},
 		"ap-south-1":     {},
+		"ap-south-2":     {},
 		"ap-southeast-1": {},
 		"ap-southeast-2": {},
 		"ap-southeast-3": {},
+		"ap-southeast-4": {},
 		"ca-central-1":   {},
 		"cn-north-1":     {},
 		"cn-northwest-1": {},
 		"eu-central-1":   {},
+		"eu-central-2":   {},
 		"eu-north-1":     {},
 		"eu-south-1":     {},
+		"eu-south-2":     {},
 		"eu-west-1":      {},
 		"eu-west-2":      {},
 		"eu-west-3":      {},
+		"il-central-1":   {},
 		"me-central-1":   {},
 		"me-south-1":     {},
 		"sa-east-1":      {},