Fix integration issue came due HBASE-15216 from main to 0.98.

https://issues.apache.org/jira/browse/HBASE-15216

Sequence of call got reverse while merging. In code we are first doing the secure login ( which needs keytab/pricipal in config ) and then doing param parsing. Call should be other way round

    // loading the generic options to conf
    new GenericOptionsParser(conf, args);
    
    AuthUtil.launchAuthChore(conf);