fixed struct alignment && refactor linter (#369)

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Reviewed-on: #369
Co-authored-by: Evstigneev Denis <danteevstigneev@yandex.ru>
Co-committed-by: Evstigneev Denis <danteevstigneev@yandex.ru>

util/structfs/metadata_digitalocean.go

@@ -10,11 +10,18 @@ import (
 type DigitalOceanMetadata struct {
 	Metadata struct {
 		V1 struct {
-			DropletID  int64    `json:"droplet_id"`
-			Hostname   string   `json:"hostname"`
-			VendorData string   `json:"vendor_data"`
+			Features map[string]interface{} `json:"features"`
+
+			Hostname   string `json:"hostname"`
+			VendorData string `json:"vendor_data"`
+			Region     string `json:"region"`
+
 			PublicKeys []string `json:"public_keys"`
-			Region     string   `json:"region"`
+
+			DNS struct {
+				Nameservers []string `json:"nameservers"`
+			} `json:"dns"`
+
 			Interfaces struct {
 				Private []struct {
 					IPv4 struct {
@@ -31,24 +38,23 @@ type DigitalOceanMetadata struct {
 						Netmask string `json:"netmask"`
 						Gateway string `json:"gateway"`
 					} `json:"ipv4"`
-					IPv6 struct {
-						Address string `json:"ip_address"`
-						CIDR    int    `json:"cidr"`
-						Gateway string `json:"gateway"`
-					} `json:"ipv6"`
 					Mac  string `json:"mac"`
 					Type string `json:"type"`
+					IPv6 struct {
+						Address string `json:"ip_address"`
+						Gateway string `json:"gateway"`
+						CIDR    int    `json:"cidr"`
+					} `json:"ipv6"`
 				} `json:"public"`
 			} `json:"interfaces"`
+
+			DropletID int64 `json:"droplet_id"`
+
 			FloatingIP struct {
 				IPv4 struct {
 					Active bool `json:"active"`
 				} `json:"ipv4"`
 			} `json:"floating_ip"`
-			DNS struct {
-				Nameservers []string `json:"nameservers"`
-			} `json:"dns"`
-			Features map[string]interface{} `json:"features"`
 		} `json:"v1"`
 	} `json:"metadata"`
 }