[storage_manager] Connection exception during test

[fabiana001]

Connection exception with Hbase, while openTsdbContext try to load existing data in hbase (openTSDBContext.loadDataFrame(metric, tags, interval)- PhysicalDatasetController line 228):

org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after attempts=36, exceptions:
Thu Nov 09 15:06:09 CET 2017, null, java.net.SocketTimeoutException: callTimeout=60000, callDuration=68252: row 'tsdb-uid,,00000000000000' on table 'hbase:meta' at region=hbase:meta,,1.1588230740, hostname=10.137.1.15,56135,1510236117824, seqNum=0