Change 'palo' to 'doris'
In last commit, a lot of files has been missed
1. Implement Backend http server using libevent instead of mongoose. 2. Remove Old Hypertable rpc framework, use brpc instead. 3. Change rpc from FE to BE to brpc. 4. Fs broker support HDFS HA. 5. add more metrics to monitor. 6. Lots of bug fixed.
* change picture to word * change picture to word * SHOW FULL TABLES WHERE Table_type != VIEW sql can not execute * change license description
