logs: change timestamp to ISO (#1708)

Co-authored-by: Vishal <vishal-biyani@users.noreply.github.com>

pkg/executor/fscache/functionServiceCache_test.go

@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
 	apiv1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
@@ -19,7 +20,9 @@ func panicIf(err error) {
 }
 
 func TestFunctionServiceCache(t *testing.T) {
-	logger, err := zap.NewDevelopment()
+	config := zap.NewDevelopmentConfig()
+	config.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
+	logger, err := config.Build()
 	panicIf(err)
 
 	fsc := MakeFunctionServiceCache(logger)