Fix for the Bug 5637 : When closing OutboundQueue close() should go prior to finishSh...

When device gets disconnected with outstanding entries in queue segment,
it could occur that entry.commit() gets invoked between segment.failAll()
and OutboundQueueProvider.close(). This fix to prevent this scenario.

Change-Id: Id297e7d4f10c7e31a550f94ac7d39f43e1320de1
Signed-off-by: Abbas Pareedkunju <abbas.pareedkunju@tcs.com>