fix: enable gofumpt instead of gofmt linter in contrib, etcdctl and etcdutl

[mmorel-35]

enables and fixes gofumpt linter issues in contrib, etcdctl and etcdutl directories

[k8s-ci-robot]

Hi @mmorel-35. Thanks for your PR.

I'm waiting for a etcd-io member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

Attention: Patch coverage is 25.00000% with 6 lines in your changes missing coverage. Please review.

Project coverage is 68.76%. Comparing base (3de0018) to head (e350ae2).
Report is 4 commits behind head on main.

❗ Current head e350ae2 differs from pull request most recent head 97e4699

Please upload reports for the commit 97e4699 to get more accurate results.

Files with missing lines	Patch %	Lines
etcdctl/ctlv3/command/printer.go	0.00%	3 Missing ⚠️
etcdctl/ctlv3/command/check.go	0.00%	2 Missing ⚠️
etcdutl/etcdutl/snapshot_command.go	0.00%	1 Missing ⚠️

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

Files with missing lines	Coverage Δ
etcdctl/ctlv3/command/elect_command.go	0.00% <ø> (ø)
etcdctl/ctlv3/command/ep_command.go	0.00% <ø> (ø)
etcdctl/ctlv3/command/lease_command.go	0.00% <ø> (ø)
etcdctl/ctlv3/command/printer_fields.go	0.00% <ø> (ø)
etcdctl/ctlv3/command/printer_simple.go	0.00% <ø> (ø)
etcdctl/ctlv3/command/printer_table.go	0.00% <ø> (ø)
etcdctl/ctlv3/command/snapshot_command.go	0.00% <ø> (ø)
etcdctl/ctlv3/command/user_command.go	0.00% <ø> (ø)
etcdctl/ctlv3/ctl.go	0.00% <ø> (ø)
etcdutl/ctl.go	0.00% <ø> (ø)
... and 8 more

... and 22 files with indirect coverage changes

@@           Coverage Diff           @@
##             main   #18754   +/-   ##
=======================================
  Coverage   68.76%   68.76%           
=======================================
  Files         420      420           
  Lines       35523    35524    +1     
=======================================
+ Hits        24426    24427    +1     
- Misses       9665     9668    +3     
+ Partials     1432     1429    -3     

---

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[ahrtr]

/ok-to-test

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ahrtr, mmorel-35

The full list of commands accepted by this bot can be found here.

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• OWNERS [ahrtr]

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[mmorel-35]

@ahrtr,

There is no suggested assignee here.
Do you know why ?
Who shall be assigned then ?

[mmorel-35]

/retest

[mmorel-35]

/assign @ahrtr

[mmorel-35]

/retest

[mmorel-35]

/test pull-etcd-integration-1-cpu-amd64

[mmorel-35]

/test pull-etcd-integration-2-cpu-amd64