Simplifying the User facing APIs in TyperUtils.

Based on Ashwin's comment to the library infra gerrit (8104), more simplified User Facing APIs are introduced :
1. Bridge rBridge = ovs.createTypedRowWrapper(TestBridge.class);
   replaces
   TestBridge rBridge = TyperUtils.getTypedRowWrapper(dbSchema, TestBridge.class, new Row<GenericTableSchema>());

2. rBridge.getSchema()
   replaces
   GenericTableSchema rBridgeSchema = TyperUtils.getTableSchema(dbSchema, TestBridge.class);

More such Simplified alternative APIs will be added based on usage.

Change-Id: Ibdee07b308145bf792c9309d7095a94aac2d23b3
Signed-off-by: Madhu Venugopal <mavenugo@gmail.com>
Merge "Simplifying the User facing APIs in TyperUtils." into topic/schema