🌱 Install tools with go install

[mdbooth]

• controller-gen
• golangci-lint
• kustomize
• setup-envtest

This patch follows the model used by kubebuilder scaffolding v4. The advantage of this model is that it independent of any go module.

/hold

[k8s-ci-robot]

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[mdbooth]

                  error: <*exec.Error | 0xc0007d40c0>{
                      Name: "kustomize",
                      Err: <*errors.errorString | 0x3f80fe0>{
                          s: "executable file not found in $PATH",
                      },
                  },

Presumably something somewhere is adding hack/tools/bin to PATH? I couldn't immediately find out what.

[k8s-ci-robot]

@mdbooth: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cluster-api-provider-openstack-test	e26d099	link	true	/test pull-cluster-api-provider-openstack-test
pull-cluster-api-provider-openstack-e2e-test	e26d099	link	true	/test pull-cluster-api-provider-openstack-e2e-test

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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