patch up variable names + endpoint test

Author: Max Presman

src/main/java/com/pubnub/api/endpoints/Endpoint.java

@@ -284,11 +284,11 @@ protected final Map<String, String> createBaseParams() {
         params.put("uuid", this.pubnub.getConfiguration().getUuid());
 
         if (this.pubnub.getConfiguration().isIncludeInstanceIdentifier()) {
-            params.put("instanceId", pubnub.getInstanceId());
+            params.put("instanceid", pubnub.getInstanceId());
         }
 
         if (this.pubnub.getConfiguration().isIncludeRequestIdentifier()) {
-            params.put("requestId", pubnub.getRequestId());
+            params.put("requestid", pubnub.getRequestId());
         }
 
         // add the auth key for publish and subscribe.

src/test/java/com/pubnub/api/endpoints/EndpointTest.java

@@ -25,7 +25,7 @@ public void beforeEach() throws IOException {
     }
 
     @Test
-    public void testUUID() throws PubNubException {
+    public void testBaseParams() throws PubNubException {
         Endpoint<Object, Object> endpoint =  new Endpoint<Object, Object>(pubnub, null) {
 
             @Override
@@ -90,6 +90,8 @@ public Request request() {
                 };
 
                 Assert.assertEquals("myUUID",baseParams.get("uuid"));
+                Assert.assertEquals("PubNubRequestId",baseParams.get("requestid"));
+                Assert.assertEquals("PubNubInstanceId",baseParams.get("instanceid"));
                 return fakeCall;
             }
         };