Conflicts:
	metadata-bridge-parent/metadata-bridge-core/src/main/java/org/apache/hadoop/metadata/bridge/hivelineage/HiveLineageBridge.java

Replaced BridgeManager
Designed EnitityBeans

service is now loaded correctly.

Fix Hive Importer to work with Graph repository and needed refactoring.   Also fix enum handling in the repository

Added columns into table and partition classes as there are no back references to table/partition from column classes

with hive.

org.apache.hadoop.metadata.hive.*

so the hook will now be: org.apache.hadoop.metadata.hive.Hook for the
pre/post/failure hook.

Conflicts:
	repository/pom.xml
	repository/src/main/java/org/apache/hadoop/metadata/services/GraphBackedMetadataRepository.java
	repository/src/main/java/org/apache/hadoop/metadata/services/MetadataRepository.java
	repository/src/main/java/org/apache/hadoop/metadata/services/TitanGraphService.java
	repository/src/test/java/org/apache/hadoop/metadata/services/GraphBackedMetadataRepositoryTest.java
	webapp/src/main/java/org/apache/hadoop/metadata/web/resources/EntityResource.java
	webapp/src/main/resources/application.properties
	webapp/src/test/java/org/apache/hadoop/metadata/GraphRepositoryServiceIT.java

they are not services and made more sense with simpler, shorter names

ServiceInitializer and Services collection no longer exist and have been
replaced by Guice dependency injection.
Added comments and improved testability.
Maven verify now runs - almost ready for CI (issues with keytool maven
plugin)