HUDI-123 Rename code packages/constants to org.apache.hudi (#830)

- Rename com.uber.hoodie to org.apache.hudi
- Flag to pass com.uber.hoodie Input formats for hoodie-sync
- Works with HUDI demo. 
- Also tested for backwards compatibility with datasets built by com.uber.hoodie packages
- Migration guide : https://cwiki.apache.org/confluence/display/HUDI/Migration+Guide+From+com.uber.hoodie+to+org.apache.hudi

hudi-timeline-service/src/test/java/org/apache/hudi/timeline/table/view/RemoteHoodieTableFileSystemViewTest.java

@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hudi.timeline.table.view;
+
+import org.apache.hudi.common.SerializableConfiguration;
+import org.apache.hudi.common.table.HoodieTimeline;
+import org.apache.hudi.common.table.SyncableFileSystemView;
+import org.apache.hudi.common.table.view.FileSystemViewManager;
+import org.apache.hudi.common.table.view.FileSystemViewStorageConfig;
+import org.apache.hudi.common.table.view.FileSystemViewStorageType;
+import org.apache.hudi.common.table.view.HoodieTableFileSystemViewTest;
+import org.apache.hudi.common.table.view.RemoteHoodieTableFileSystemView;
+import org.apache.hudi.timeline.service.TimelineService;
+import org.apache.log4j.LogManager;
+import org.apache.log4j.Logger;
+
+/**
+ * Bring up a remote Timeline Server and run all test-cases of HoodieTableFileSystemViewTest against it
+ */
+public class RemoteHoodieTableFileSystemViewTest extends HoodieTableFileSystemViewTest {
+
+  private static Logger log = LogManager.getLogger(RemoteHoodieTableFileSystemViewTest.class);
+
+  private TimelineService server;
+  private RemoteHoodieTableFileSystemView view;
+
+  protected SyncableFileSystemView getFileSystemView(HoodieTimeline timeline) {
+    FileSystemViewStorageConfig sConf = FileSystemViewStorageConfig.newBuilder()
+        .withStorageType(FileSystemViewStorageType.SPILLABLE_DISK).build();
+    try {
+      server =
+          new TimelineService(0,
+              FileSystemViewManager.createViewManager(new SerializableConfiguration(metaClient.getHadoopConf()),
+                  sConf));
+      server.startService();
+    } catch (Exception ex) {
+      throw new RuntimeException(ex);
+    }
+    log.info("Connecting to Timeline Server :" + server.getServerPort());
+    view = new RemoteHoodieTableFileSystemView("localhost", server.getServerPort(), metaClient);
+    return view;
+  }
+}

hudi-timeline-service/src/test/resources/log4j-surefire-quiet.properties

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+###
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+###
+log4j.rootLogger=WARN, A1
+# A1 is set to be a ConsoleAppender.
+log4j.appender.A1=org.apache.log4j.ConsoleAppender
+# A1 uses PatternLayout.
+log4j.appender.A1.layout=org.apache.log4j.PatternLayout
+log4j.appender.A1.layout.ConversionPattern=[%-5p] %d %c %x - %m%n

hudi-timeline-service/src/test/resources/log4j-surefire.properties

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+###
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+###
+log4j.rootLogger=WARN, A1
+log4j.category.com.uber=INFO
+log4j.category.com.uber.hoodie.table.log=WARN
+log4j.category.com.uber.hoodie.common.util=WARN
+log4j.category.org.apache.parquet.hadoop=WARN
+# A1 is set to be a ConsoleAppender.
+log4j.appender.A1=org.apache.log4j.ConsoleAppender
+# A1 uses PatternLayout.
+log4j.appender.A1.layout=org.apache.log4j.PatternLayout
+log4j.appender.A1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n