Russian translations for the IPv4/DNS network settings

Add russian translations that were missed in a commit
b34349d4139230fb4ca99bf89a6b0e1f707e58e2
("Network Settings: Add and Delete IPV4 and DNS address").

Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>
Change-Id: I5ba7588848c5451efe2e0ef8edb2ff9b4a71b207
diff --git a/src/locales/ru-RU.json b/src/locales/ru-RU.json
index 106db4e..8c370e2 100644
--- a/src/locales/ru-RU.json
+++ b/src/locales/ru-RU.json
@@ -651,9 +651,11 @@
     "modal": {
       "ipAddress": "IP адрес",
       "gateway": "Шлюз",
+      "staticDns": "Статический DNS",
       "subnetMask": "Маска подсети"
     },
     "table": {
+      "addDnsAddress": "Добавить IP адрес",
       "addIpv4Address": "Добавить статический IPv4 адрес",
       "addressOrigin": "Источник адреса",
       "deleteDns": "Редактировать DNS адрес",