feat: make fmt.FPrintln instead of klog while printing error message

[developer-guy]

Signed-off-by: Batuhan Apaydın batuhan.apaydin@trendyol.com

Fixes #717
Related issue: #717

cc: @Dentrax @erkanzileli

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[corneliusweig]

As far as I understand, @developer-guy you agree that keeping klog here is the better choice, right? If not, please reopen.
/close

[k8s-ci-robot]

@corneliusweig: Closed this PR.

In response to this:

As far as I understand, @developer-guy you agree that keeping klog here is the better choice, right? If not, please reopen.
/close

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[developer-guy]

hi @corneliusweig, yes but just for printing the stack trace of the error like ahmetb said, fmt package would be ok for the other one.

[developer-guy]

@corneliusweig how can I re-open it?

[developer-guy]

/reopen

[k8s-ci-robot]

@developer-guy: Reopened this PR.

In response to this:

/reopen

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[ahmetb]

@corneliusweig I think for the user-visible message at -v=0 we can print without klog.

/lgtm
/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ahmetb, developer-guy

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[developer-guy]

sorry for the ping @corneliusweig but can you please tell me what can I do for completing this issue? Because I think it is ready to merge, isn't it?

[ahmetb]

/retest
for some reason the tests are failing

[developer-guy]

I'm not sure that it can help but tests are passing on my machine.

[ahmetb]

hack/run-integration-tests.sh is what's failing. Can be relevant since those tests check output.

[ahmetb]

I think the tests are failing because fmt.Print does not cause the process to exit with a non-zero status code :)

[developer-guy]

I think the tests are failing because fmt.Print does not cause the process to exit with a non-zero status code :)

thank you so much, I added a new line to make it exit with a non-zero status code.

[ahmetb]

/lgtm