ATLAS-3434: Update janusgraph-hbase storage manager PREFERRED_TIMESTAMPS from MILLI to MICRO

graphdb/janus-hbase2/src/main/java/org/janusgraph/diskstorage/hbase2/HBaseStoreManager.java

@@ -225,7 +225,7 @@ public class HBaseStoreManager extends DistributedStoreManager implements KeyCol
 
     public static final int PORT_DEFAULT = 9160;
 
-    public static final TimestampProviders PREFERRED_TIMESTAMPS = TimestampProviders.MILLI;
+    public static final TimestampProviders PREFERRED_TIMESTAMPS = TimestampProviders.MICRO;
 
     public static final ConfigNamespace HBASE_CONFIGURATION_NAMESPACE =
             new ConfigNamespace(HBASE_NS, "ext", "Overrides for hbase-{site,default}.xml options", true);