Fix reconnection bug in logs/conn.go

Add docker-compose to support running unit test locally

Remove tidb dependency

upgrade version

Fix ES bug

update support bit operation

 Conflicts:
	go.mod
	go.sum

make redis client idle timeout configurable

Fix ES index problem

fix strings.Repeat panic

Prohibit multiple calls SetDefaultMessage.

for go modules, generate route by `GO111MODULE=on`

Add build info for prometheus

Move many PR's change here since the original authors are responseless

acquire() in Lock

Get the real location of the log directory before using filepath.Walk function when remove old logs

GetMapData change to read lock

Update redis.go

Fix: Too Many Prepare Statement

fix graceful bug: old process didn't exist when graceful restart