Review fix

Author: ImeevMA

aeon_internal.proto

@@ -14,22 +14,24 @@ service InternalService {
 // Get configurations of all instances.
 
 // General structure of returned configuration
-message ConfigData {
+message Config {
   // Structure of configuration of single instance.
-  message InstanceConfig {
+  message Instance {
+    // Name of the instance.
+    string name = 1;
+    // Replicaset of the instance.
+    string replicaset = 2;
+    // Group of the instance.
+    string group = 3;
+    // URI of the instance.
+    Value uri = 4;
     // Tarantool instance configuration.
-    MapValue config
-    // Instance URI.
-    Value uri
-    // Instance replicaset.
-    string replicaset
-    // Instance group.
-    string group
+    Value config = 5;
   }
   // The name of the instance that provided this configuration.
-  string name
+  string name = 1;
   // Configurations of all instances.
-  map<string, InstanceConfig> instances
+  repeated Instance instances = 2;
 }
 
 message GetConfigRequest {}
@@ -38,5 +40,5 @@ message GetConfigResponse {
   // Error information. Set only on failure.
   Error error = 1;
   // Configurations of instances.
-  ConfigData config = 2;
+  Config config = 2;
 }