[Chore] Use gci to control Go package import order

[win5923]

Why are these changes needed?

Group and sort the imports in Go.

The order of sections is standard > default > custom > blank > dot > localmodule

GCI splits all import blocks into different sections, now support six section type:

• standard: Go official imports, like "fmt"
• custom: Custom section, use full and the longest match (match full string first, if multiple matches, use the longest one)
• default: All rest import blocks
• blank: Put blank imports together in a separate group
• dot: Put dot imports together in a separate group
• alias: Put alias imports together in a separate group
• localmodule: Put imports from local packages in a separate group

Before:

import (
	"context"
	errstd "errors"
	"fmt"
	"os"
	"reflect"
	"runtime"
	"strconv"
	"strings"
	"time"

	"k8s.io/apimachinery/pkg/api/meta"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/utils/ptr"

	configapi "github.com/ray-project/kuberay/ray-operator/apis/config/v1alpha1"
	"github.com/ray-project/kuberay/ray-operator/controllers/ray/batchscheduler"
	"github.com/ray-project/kuberay/ray-operator/controllers/ray/common"
	"github.com/ray-project/kuberay/ray-operator/controllers/ray/expectations"
	"github.com/ray-project/kuberay/ray-operator/controllers/ray/utils"
	"github.com/ray-project/kuberay/ray-operator/pkg/features"

	batchv1 "k8s.io/api/batch/v1"
	rbacv1 "k8s.io/api/rbac/v1"

	"k8s.io/client-go/tools/record"

	rayv1 "github.com/ray-project/kuberay/ray-operator/apis/ray/v1"

	"github.com/go-logr/logr"
	routev1 "github.com/openshift/api/route/v1"
	"k8s.io/client-go/discovery"
	"k8s.io/client-go/rest"

	corev1 "k8s.io/api/core/v1"
	networkingv1 "k8s.io/api/networking/v1"
	"k8s.io/apimachinery/pkg/api/errors"
	"k8s.io/apimachinery/pkg/api/resource"
	k8sruntime "k8s.io/apimachinery/pkg/runtime"
	ctrl "sigs.k8s.io/controller-runtime"
	"sigs.k8s.io/controller-runtime/pkg/builder"
	"sigs.k8s.io/controller-runtime/pkg/client"
	"sigs.k8s.io/controller-runtime/pkg/controller"
	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
	"sigs.k8s.io/controller-runtime/pkg/manager"
	"sigs.k8s.io/controller-runtime/pkg/predicate"
	"sigs.k8s.io/controller-runtime/pkg/reconcile"
)

After:

import (
	"context"
	errstd "errors"
	"fmt"
	"os"
	"reflect"
	"runtime"
	"strconv"
	"strings"
	"time"

	"github.com/go-logr/logr"
	routev1 "github.com/openshift/api/route/v1"
	batchv1 "k8s.io/api/batch/v1"
	corev1 "k8s.io/api/core/v1"
	networkingv1 "k8s.io/api/networking/v1"
	rbacv1 "k8s.io/api/rbac/v1"
	"k8s.io/apimachinery/pkg/api/errors"
	"k8s.io/apimachinery/pkg/api/meta"
	"k8s.io/apimachinery/pkg/api/resource"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	k8sruntime "k8s.io/apimachinery/pkg/runtime"
	"k8s.io/client-go/discovery"
	"k8s.io/client-go/rest"
	"k8s.io/client-go/tools/record"
	"k8s.io/utils/ptr"
	ctrl "sigs.k8s.io/controller-runtime"
	"sigs.k8s.io/controller-runtime/pkg/builder"
	"sigs.k8s.io/controller-runtime/pkg/client"
	"sigs.k8s.io/controller-runtime/pkg/controller"
	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
	"sigs.k8s.io/controller-runtime/pkg/manager"
	"sigs.k8s.io/controller-runtime/pkg/predicate"
	"sigs.k8s.io/controller-runtime/pkg/reconcile"

	configapi "github.com/ray-project/kuberay/ray-operator/apis/config/v1alpha1"
	rayv1 "github.com/ray-project/kuberay/ray-operator/apis/ray/v1"
	"github.com/ray-project/kuberay/ray-operator/controllers/ray/batchscheduler"
	"github.com/ray-project/kuberay/ray-operator/controllers/ray/common"
	"github.com/ray-project/kuberay/ray-operator/controllers/ray/expectations"
	"github.com/ray-project/kuberay/ray-operator/controllers/ray/utils"
	"github.com/ray-project/kuberay/ray-operator/pkg/features"
)

Related issue number

Closes #2567

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • This PR is not tested :(

[win5923]

According to daixiang0/gci#135, can not use gci.