minimize allocations in logger and tunnel code (#1323)

* logs alloc

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* fix allocs

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* fix allocs

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* tunnel allocs

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* try to fix tunnel

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* cache cipher for send

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* more logger

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* more logger

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* more logger

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* more logger

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* more logger

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* more logger

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* more logger

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

registry/kubernetes/watcher.go

@@ -6,7 +6,7 @@ import (
 	"strings"
 	"sync"
 
-	log "github.com/micro/go-micro/v2/logger"
+	"github.com/micro/go-micro/v2/logger"
 	"github.com/micro/go-micro/v2/registry"
 	"github.com/micro/go-micro/v2/util/kubernetes/client"
 )
@@ -132,7 +132,9 @@ func (k *k8sWatcher) buildPodResults(pod *client.Pod, cache *client.Pod) []*regi
 func (k *k8sWatcher) handleEvent(event client.Event) {
 	var pod client.Pod
 	if err := json.Unmarshal([]byte(event.Object), &pod); err != nil {
-		log.Info("K8s Watcher: Couldnt unmarshal event object from pod")
+		if logger.V(logger.InfoLevel, logger.DefaultLogger) {
+			logger.Info("K8s Watcher: Couldnt unmarshal event object from pod")
+		}
 		return
 	}