[bug] config file not found when xenon container creating

[hustjieke]

Describe the problem

root@i-kk9hywm3:~/radondb-mysql-kubernetes/charts/helm# kubectl logs helmdemo-radondb-mysql-0 xenon
xenon:[{Tag:v1.1.4-30-g0abe249 Time:2021/07/19 14:23:49 Git:0abe249 GoVersion:go1.16.6 Platform:linux amd64}]
 2021/08/10 03:22:59.653969 xenon.go:52:    	 [PANIC] 	xenon.loadconfig.error[open /etc/xenon/xenon.json: no such file or directory]
panic: 	 [PANIC] 	xenon.loadconfig.error[open /etc/xenon/xenon.json: no such file or directory]

goroutine 1 [running]:
xbase/xlog.(*Log).Panic(0xc000052290, 0x906f99, 0x1a, 0xc00010fe08, 0x1, 0x1)
	/go/src/github.com/radondb/xenon/src/xbase/xlog/xlog.go:164 +0x157
main.main()
	/go/src/github.com/radondb/xenon/src/xenon/xenon.go:52 +0x47b

To Reproduce

1. helm install helmdemo charts/helm

Expected behavior

Environment:

• RadonDB MySQL version: