public static Result getMetaTableRowResult(final RegionInfo region, final ServerName sn)
    throws IOException {
    return getMetaTableRowResult(region, sn, null, null);
  }
Returns a Result object constructed from the given region information simulating a catalog
table result.
@param region the HRegionInfo object or null
@param sn     to use making startcode and server hostname:port in meta or null
@return A mocked up Result that fakes a Get on a row in the <code>hbase:meta</code> table.
hbase-server/src/test/java/org/apache/hadoop/hbase/MetaMockingUtil.java