DB-11136 Use SYNC_WAL in standalone (#4981)
DB-11136 Use SYNC_WAL in standalone (#4981)

ASYNC_WAL doesn't eventually force a SYNC as I thought, so we need to
use SYNC_WAL if we want durability for standalone. See
https://issues.apache.org/jira/browse/HBASE-16689 for details
splicemachine/spliceengine,splicemachine/spliceengine,splicemachine/spliceengine,splicemachine/spliceengine,splicemachine/spliceengine,splicemachine/spliceengine,splicemachine/spliceengine