MySQL Workbench 8.0 connect to dble failed, but it connect to MySQL 5.7.13 successfully

[wjl1619]

• dble version：
  5.6.29-dble-9.9.9.9-0e46f01-20181106093320
• preconditions ：
  no
• configs：

schema.xml

rule.xml

server.xml

• steps：
  step1. use MySQL Workbech 8.0 to connect dble
• expect result：
  1.connect successfully
• real result：
  1.connect failed
• supplements：
  1.maybe it caused by not supports the caching_sha2_password authentication plugin, details please check the attachment file.

/label ~BUG

[wjl1619]

capture package of workbench 8.0 connect to mysql5.7 directly.txt
note: please change the extention name as .pcapng before you open the above file

[yanhuqing666]

https://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::AuthSwitchRequest