[openvpn] Add missing TLS ciphers #172

Fixes #172

Author: okraits

netjsonconfig/backends/openvpn/schema.py

@@ -111,16 +111,19 @@
                         "AES-128-CFB",
                         "AES-128-CFB1",
                         "AES-128-CFB8",
+                        "AES-128-GCM",
                         "AES-128-OFB",
                         "AES-192-CBC",
                         "AES-192-CFB",
                         "AES-192-CFB1",
                         "AES-192-CFB8",
+                        "AES-192-GCM",
                         "AES-192-OFB",
                         "AES-256-CBC",
                         "AES-256-CFB",
                         "AES-256-CFB1",
                         "AES-256-CFB8",
+                        "AES-256-GCM",
                         "AES-256-OFB",
                         "BF-CBC",
                         "BF-CFB",