Added a batchHint flag where, if true, it elides sending AppendEntries
immediately. AppendEntries will be sent on the next persistData call
with batchHint false or at the next heartbeat interval.
Change-Id: Id887ab46d5147e4fb5e50e52acaa8887d4048e1d Signed-off-by: Tom Pantelis <tpanteli@brocade.com>