fix: enable tenv linter

[mmorel-35]

Tenv is an analyzer that detects using os.Setenv instead of t.Setenv since Go1.17.

enables and fixes tenv linter issues

[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 44.11765% with 38 lines in your changes missing coverage. Please review.

Project coverage is 68.77%. Comparing base (ac3d5d7) to head (f683b3b).
Report is 33 commits behind head on main.

❗ Current head f683b3b differs from pull request most recent head 048fd57

Please upload reports for the commit 048fd57 to get more accurate results.

Files with missing lines	Patch %	Lines
etcdctl/ctlv3/command/global.go	0.00%	12 Missing ⚠️
etcdctl/ctlv3/command/make_mirror_command.go	0.00%	10 Missing ⚠️
client/v3/mock/mockserver/mockserver.go	0.00%	4 Missing ⚠️
client/v3/snapshot/v3_snapshot.go	0.00%	2 Missing ⚠️
etcdctl/ctlv3/ctl.go	0.00%	2 Missing ⚠️
pkg/netutil/netutil.go	50.00%	2 Missing ⚠️
client/v3/client.go	80.00%	0 Missing and 1 partial ⚠️
client/v3/experimental/recipes/key.go	50.00%	1 Missing ⚠️
client/v3/leasing/kv.go	50.00%	0 Missing and 1 partial ⚠️
client/v3/maintenance.go	66.66%	1 Missing ⚠️
... and 2 more

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Additional details and impacted files

Files with missing lines	Coverage Δ
client/v3/config.go	85.45% <100.00%> (+0.54%)	⬆️
client/v3/lease.go	90.17% <100.00%> (-0.71%)	⬇️
client/v3/retry.go	79.48% <100.00%> (+0.17%)	⬆️
client/v3/retry_interceptor.go	65.61% <100.00%> (ø)
client/v3/watch.go	93.83% <100.00%> (ø)
pkg/expect/expect.go	79.12% <100.00%> (ø)
pkg/featuregate/feature_gate.go	87.66% <100.00%> (ø)
pkg/flags/flag.go	68.57% <100.00%> (ø)
server/storage/mvcc/testutil/hash.go	83.78% <100.00%> (ø)
client/v3/client.go	84.93% <80.00%> (+0.04%)	⬆️
... and 11 more

... and 20 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #18774      +/-   ##
==========================================
+ Coverage   68.74%   68.77%   +0.02%     
==========================================
  Files         420      420              
  Lines       35481    35508      +27     
==========================================
+ Hits        24393    24422      +29     
- Misses       9656     9659       +3     
+ Partials     1432     1427       -5     

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[mmorel-35]

/assign @jmhbnz

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• OWNERS [serathius]

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[serathius]

This is awesome improvement.