Functional test/sample code for chunked upload

Several people were requesting samples on how to do this. The functional test also adds test coverage. Ported from [.NET client library functional test](https://github.com/microsoftgraph/msgraph-sdk-dotnet/blob/dev/tests/Microsoft.Graph.Test/Requests/Functional/OneDriveTests.cs)

Author: Caitlin Bales (MSFT)

src/test/java/com/microsoft/graph/functional/OneDriveTests.java

@@ -0,0 +1,80 @@
+package com.microsoft.graph.functional;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.microsoft.graph.concurrency.ChunkedUploadProvider;
+import com.microsoft.graph.concurrency.IProgressCallback;
+import com.microsoft.graph.core.ClientException;
+import com.microsoft.graph.models.extensions.DriveItem;
+import com.microsoft.graph.models.extensions.DriveItemUploadableProperties;
+import com.microsoft.graph.models.extensions.UploadSession;
+
+public class OneDriveTests {
+    private TestBase testBase;
+
+    @Before
+    public void setUp() {
+       testBase = new TestBase();
+    }
+    
+    /**
+     * Test large file upload. 
+     * https://github.com/OneDrive/onedrive-sdk-csharp/blob/master/docs/chunked-uploads.md
+     * 
+     * @throws IOException if the input file is not found
+     * @throws InterruptedException if the chunked upload fails
+     */
+    @Test
+    public void testLargeFileUpload() throws IOException, InterruptedException {
+    	String itemId = "01BQHXQL5GQVAGCFJLYRH3EAG2YHGERMQA"; //Test upload folder
+    	
+    	//Get resource file from file system
+    	ClassLoader classloader = Thread.currentThread().getContextClassLoader();
+    	InputStream uploadFile = classloader.getResourceAsStream("hamilton.jpg");
+    	int fileSize = uploadFile.available();
+    	
+    	IProgressCallback<DriveItem> callback = new IProgressCallback<DriveItem> () {
+    		@Override
+        	public void progress(final long current, final long max) {
+        		//Check progress
+        	}
+    		@Override
+    		public void success(final DriveItem result) {
+    			//Handle the successful response
+    			String finishedItemId = result.id;
+    			Assert.assertNotNull(finishedItemId);
+    		}
+    		
+    		@Override
+    		public void failure(final ClientException ex) {
+    			//Handle the failed upload
+    			Assert.fail("Upload session failed");
+    		}
+    	};
+    	
+    	UploadSession uploadSession = testBase
+    			.graphClient
+    			.me()
+    			.drive()
+    			.items(itemId)
+    			.itemWithPath("_hamilton.jpg")
+    			.createUploadSession(new DriveItemUploadableProperties())
+    			.buildRequest()
+    			.post();
+    	
+    	ChunkedUploadProvider<DriveItem> chunkedUploadProvider = new ChunkedUploadProvider<DriveItem>(
+    			uploadSession, 
+    			testBase.graphClient, 
+    			uploadFile, 
+    			fileSize, 
+    			DriveItem.class);
+		
+    	chunkedUploadProvider.upload(null, callback);
+    }
+    
+}