What would you like to be added?

With the Go 1.24 upgrade (#19440), golangci-lint (specifically the usetesting linter) started raising many issues related to new test functions available in Go 1.24.

The changes are more or less:

146 files changed, 1157 insertions(+), 1212 deletions(-)

Because we couldn't solve the issues in Go 1.23 (functions don't exist yet), I disabled the linter. The idea is to create small pull requests that address each one of our submodules.

Completion tracking:

• client/pkg: address Go 1.24 usetesting issues #19576
• pkg: address Go 1.24 usetesting issues #19575
• client: address Go 1.24 usetesting issues #19589
• server: address Go 1.24 usetesting issues #19590
• etcdutl: address Go 1.24 usetesting issues #19591
• tests/common: address Go 1.24 usetesting issues #19592
• tests/e2e: address Go 1.24 usetesting issues #19593
  • tests/e2e: address usetesting issues #20062
• tests/framework: address Go 1.24 usetesting issues #19595
• tests/robustness: address Go 1.24 usetesting issues #19596
• tests/common: address Go 1.24 usetesting issues #20070
• tests/integration
  • tests/integration/clientv3/concurrency/ - chore(test): address Go usetesting for concurrency #20079
  • tests/integration/clientv3/connectivity/ - chore(test): address Go usetesting for connectivity #20080
  • tests/integration/clientv3/experimental/ - chore(test): address Go usetesting for experimental #20081
  • tests/integration/clientv3/lease/lease_test.go - chore(test): address usetesting issues in lease_test.go #20082
  • tests/integration/clientv3/lease/leasing_test.go - chore(test): address Go usetesting for leasing_test #20083
  • tests/integration/clientv3/watch_test.go - chore(test): address Go usetesting for watch_test #20084
  • tests/integration/clientv3/* - chore(test): address Go usetesting for clientV3 #20088
  • tests/integration/v3_auth_test.go - chore(test): address Go usetesting for v3_auth_test #20085
  • tests/integration/v3_grpc_test.go - chore(test): address Go usetesting for v3_grpc_test #20086
  • tests/integration/v3_lease_test.go - chore(test): address Go usetesting for v3_lease_test #20087
  • tests/integration/v3_watch_test.go - chore(test): address Go usetesting for watch_test #20084
  • tests/integration/* - tests/integration: address usetesting issues #20094
• chore(clientV3): address Go usetesting for clientV3 #20095
• chore(test): Re-enable usetesting linter #20089

Why is this needed?

To reenable the linter, and help with code quality.