Enable debug messgaes via klog

At present any libraries using klog do not log debug messages when
the `--debug` flag is set. This change chains klog to `--debug` flag
and enables debugging of all dependencies that use klog, e.g. various
packages under `pkg/lib/operatorclient` and `pkg/lib/kubernetes`.

Author: errordeveloper

cmd/olm/main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"crypto/tls"
+	"flag"
 	"fmt"
 	"net/http"
 	"os"
@@ -16,6 +17,8 @@ import (
 	"github.com/spf13/pflag"
 	v1 "k8s.io/api/core/v1"
 
+	"k8s.io/klog"
+
 	"github.com/operator-framework/operator-lifecycle-manager/pkg/api/client/clientset/versioned"
 	"github.com/operator-framework/operator-lifecycle-manager/pkg/controller/operators/olm"
 	"github.com/operator-framework/operator-lifecycle-manager/pkg/feature"
@@ -81,6 +84,10 @@ func main() {
 	// Get exit signal context
 	ctx, cancel := context.WithCancel(signals.Context())
 	defer cancel()
+
+	klogFlags := flag.NewFlagSet("klog", flag.ExitOnError)
+	klog.InitFlags(klogFlags)
+
 	pflag.Parse()
 
 	// Parse the command-line flags.
@@ -107,6 +114,8 @@ func main() {
 	logger := logrus.New()
 	if *debug {
 		logger.SetLevel(logrus.DebugLevel)
+		klogVerbosity := klogFlags.Lookup("v")
+		klogVerbosity.Value.Set("99")
 	}
 	logger.Infof("log level %s", logger.Level)