Fix ShardManagerInfo JMX registration error
The ShardManagerInfo mbean is failing to register with error:
"ShardManagerInfo does not implement DynamicMBean, and neither
follows the Standard MBean conventions". To be a standard MBean, the
implementation class must be in the same package as the MBean
interface. However recent refactoring moved the ShardManagerInfo
class to a new package so I moved both the ShardManagerMBean class to
the org.opendaylight.controller.cluster.datastore.shardmanager package.
Change-Id: I77870e7cf8274f3e99e116d6f18949ac3cf26e41
Signed-off-by: Tom Pantelis <tpanteli@brocade.com>