🌱 Add lint-config target to validate config and fix issues faced

[camilamacedo86]

Fix golangci-lint config schema errors: corrected invalid govet fieldalignment

This PR add the new target, which is also called in the CI to validate the Lint config for Kubebuilder itself and solve the issues found:

make lint-config
/Users/camilam/go/src/sigs.k8s.io/kubebuilder/bin/golangci-lint config verify
jsonschema: "linters-settings.revive.rules.3.arguments" does not validate with "/properties/linters-settings/properties/revive/properties/rules/items/properties/arguments/type": expected array, but got object
jsonschema: "linters-settings.govet" does not validate with "/properties/linters-settings/properties/govet/additionalProperties": additionalProperties 'enable=fieldalignment' not allowed
Failed executing command with error: the configuration contains invalid elements
make: *** [lint-config] Error 3

Related to: #4416

[k8s-ci-robot]

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[camilamacedo86]

@mateusoliveira43

See the fix required.

[k8s-ci-robot]

@camilamacedo86: The following test 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-kubebuilder-e2e-k8s-1-32-0	cd504d3	link	true	/test pull-kubebuilder-e2e-k8s-1-32-0

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[camilamacedo86]

Just add the linter check for kubebuilder itself.