Some generated files are not well-formated

[lichuqiang]

When walking through the files generated through kubebuilder, I found codes in some files are not well-aligned, for example in cmd/controller-manager/main.go:

import (
        "flag"
        "log"
    
    // Import auth/gcp to connect to GKE clusters remotely
    _ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
    
    configlib "github.com/kubernetes-sigs/kubebuilder/pkg/config"
        "github.com/kubernetes-sigs/kubebuilder/pkg/inject/run"
        "github.com/kubernetes-sigs/kubebuilder/pkg/install"
    "github.com/kubernetes-sigs/kubebuilder/pkg/signals"
        extensionsv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
    
    "example.com/pkg/inject"
    "example.com/pkg/inject/args"
)

var installCRDs = flag.Bool("install-crds", true, "install the CRDs used by the controller as part of startup")

// Controller-manager main.
func main() {
        flag.Parse()

    stopCh := signals.SetupSignalHandler()

Of course a user can easily format the files via go fmt, but for better experience, I think we'd better

1. modify existing templates and the place to generate files, to ensure the generated codes are well-formated
2. or maybe we can exec go format for output files automatically

@pwittrock WDYT?

[Liujingfang1]

@lichuqiang I found a recent comment #147 exec go format on the generated codes.

[lichuqiang]

@Liujingfang1 Thanks!
Closing the issue since it's already fixed by #147