[HUDI-744] Restructure hudi-common and clean up files under util packages (#1462)

- Brings more order and cohesion to the classes in hudi-common
 - Utils classes related to a particular concept (avro, timeline,...) are placed near to the package
 - common.fs package now contains all the filesystem level classes including wrapper filesystem
 - bloom.filter package renamed to just bloom
 - config package contains classes that help store properties
 - common.fs.inline package contains all the inline filesystem classes/impl
 - common.table.timeline now consolidates all timeline related classes
 - common.table.view consolidates all the classes related to filesystem view metadata
 - common.table.timeline.versioning contains all classes related to versioning of timeline
 - Fix few unit tests as a result
 - Moved the test packages around to match the source file move
 - Rename AvroUtils to TimelineMetadataUtils & minor fixes/typos

hudi-cli/src/test/java/org/apache/hudi/cli/commands/TestArchivedCommitsCommand.java

@@ -26,7 +26,7 @@ import org.apache.hudi.cli.common.HoodieTestCommitMetadataGenerator;
 import org.apache.hudi.cli.common.HoodieTestCommitUtilities;
 import org.apache.hudi.common.model.HoodieCommitMetadata;
 import org.apache.hudi.common.table.HoodieTableMetaClient;
-import org.apache.hudi.common.table.HoodieTimeline;
+import org.apache.hudi.common.table.timeline.HoodieTimeline;
 import org.apache.hudi.common.table.timeline.HoodieInstant;
 import org.apache.hudi.config.HoodieCompactionConfig;
 import org.apache.hudi.config.HoodieWriteConfig;

hudi-cli/src/test/java/org/apache/hudi/cli/commands/TestTableCommand.java

@@ -22,7 +22,7 @@ import org.apache.hudi.cli.AbstractShellIntegrationTest;
 import org.apache.hudi.cli.HoodieCLI;
 import org.apache.hudi.common.model.HoodieTableType;
 import org.apache.hudi.common.table.HoodieTableMetaClient;
-import org.apache.hudi.common.util.ConsistencyGuardConfig;
+import org.apache.hudi.common.fs.ConsistencyGuardConfig;
 import org.junit.Before;
 import org.junit.Test;
 import org.springframework.shell.core.CommandResult;

hudi-cli/src/test/java/org/apache/hudi/cli/common/HoodieTestCommitMetadataGenerator.java

@@ -27,9 +27,9 @@ import org.apache.hudi.common.model.HoodieCommitMetadata;
 import org.apache.hudi.common.model.HoodieTestUtils;
 import org.apache.hudi.common.model.HoodieWriteStat;
 import org.apache.hudi.common.table.HoodieTableMetaClient;
-import org.apache.hudi.common.table.HoodieTimeline;
+import org.apache.hudi.common.table.timeline.HoodieTimeline;
 import org.apache.hudi.common.util.CollectionUtils;
-import org.apache.hudi.common.util.FSUtils;
+import org.apache.hudi.common.fs.FSUtils;
 import org.apache.hudi.exception.HoodieIOException;
 
 import java.io.IOException;