Fix verify command

[buptliuwei]

The file in the mountpath in the pod is out instead of out.txt

[root@efs-app /]# ls
bin  data  dev	etc  home  lib	lib64  lost+found  media  mnt  opt  proc  root	run  sbin  srv	sys  tmp  usr  var
[root@efs-app /]# cd data
[root@efs-app data]# ls
out
[root@efs-app data]# pwd
/data
[root@efs-app data]#

$ kubectl exec -ti efs-app -- tail -f /data/out.txt
tail: cannot open '/data/out.txt' for reading: No such file or directory
tail: no files remaining
command terminated with exit code 1
$ kubectl exec -ti efs-app -- tail -f /data/out
Sun Apr 25 11:59:59 UTC 2021
Sun Apr 25 12:00:04 UTC 2021
Sun Apr 25 12:00:09 UTC 2021
Sun Apr 25 12:00:14 UTC 2021

Is this a bug fix or adding new feature?
/bug fix
What is this PR about? / Why do we need it?
/doc /update readme
What testing is done?
Verify locally

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[k8s-ci-robot]

Hi @buptliuwei. Thanks for your PR.

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[buptliuwei]

/assign @d-nishi

[wongma7]

/lgtm
/approve

thanks

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: buptliuwei, wongma7

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