Rename OpenVPN profile file and add profile loader

OpenVPN Adapter Tests/ProfileLoader.swift

@@ -0,0 +1,31 @@
+//
+//  ProfileLoader.swift
+//  OpenVPN Adapter
+//
+//  Created by Sergey Abramchuk on 22.04.17.
+//
+//
+
+import Foundation
+
+enum ProfileType: String {
+    case localKeyAuthentication = "local_key_auth"
+}
+
+struct ProfileLoader {
+    
+    static func getVPNProfile(type: ProfileType) -> Data {
+        let fileName = type.rawValue
+        
+        guard
+            let path = Bundle.current.url(forResource: fileName, withExtension: "ovpn"),
+            let profile = try? Data(contentsOf: path)
+        else {
+            fatalError("Failed to retrieve OpenVPN profile")
+        }
+        
+        return profile
+    }
+    
+}
+