GUACAMOLE-40: Define RD gateway and load balancing parameters for RDP.

guacamole-ext/src/main/resources/org/apache/guacamole/protocols/rdp.json

@@ -49,6 +49,32 @@
             ]
         },
 
+        {
+            "name"  : "gateway",
+            "fields" : [
+                {
+                    "name"  : "gateway-hostname",
+                    "type"  : "TEXT"
+                },
+                {
+                    "name"  : "gateway-port",
+                    "type"  : "NUMERIC"
+                },
+                {
+                    "name"  : "gateway-username",
+                    "type"  : "USERNAME"
+                },
+                {
+                    "name"  : "gateway-password",
+                    "type"  : "PASSWORD"
+                },
+                {
+                    "name"  : "gateway-domain",
+                    "type"  : "TEXT"
+                }
+            ]
+        },
+
         {
             "name"  : "basic-parameters",
             "fields" : [
@@ -228,6 +254,16 @@
             ]
         },
 
+        {
+            "name"  : "load-balancing",
+            "fields" : [
+                {
+                    "name"  : "load-balance-info",
+                    "type"  : "TEXT"
+                }
+            ]
+        },
+
         {
             "name" : "recording",
             "fields" : [