Add Kubernetes operator webook server as DNS target (#10404)

This PR adds a DNS target that ensures to update an entry
into Kubernetes operator when a bucket is created or deleted.

See minio/operator#264 for details.

Co-authored-by: Harshavardhana <harsha@minio.io>

cmd/server-main.go

@@ -32,6 +32,7 @@ import (
 
 	"github.com/minio/cli"
 	"github.com/minio/minio/cmd/config"
+	"github.com/minio/minio/cmd/config/etcd/dns"
 	xhttp "github.com/minio/minio/cmd/http"
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/auth"
@@ -129,6 +130,7 @@ func serverHandleCmdArgs(ctx *cli.Context) {
 
 	// Register root CAs for remote ENVs
 	env.RegisterGlobalCAs(globalRootCAs)
+	dns.RegisterGlobalCAs(globalRootCAs)
 
 	globalMinioAddr = globalCLIContext.Addr