After running test in local, there will be a file named
`.rediscli_history_test`, and it is not in `.gitignore` file, so this is
considered to have changed the code base. It is a little annoying, this
commit just clean up the temporary file.
We should delete `.rediscli_history_test` in the end since the second
server tests also write somethings into it, to make it corresponding, i
put `set ::env(REDISCLI_HISTFILE) ".rediscli_history_test"` at the
beginning.
Maybe we also can add this file into `.gitignore`
b71a610f5c