Output a warning for label image labels instead of erroring

This change ignore errors during container runtime due to large
image labels and instead outputs warning. This is necessary as certain
image building tools like buildpacks may have large labels in the images
which need not be passed to the container.

Signed-off-by: Sambhav Kothari <sambhavs.email@gmail.com>

pkg/cri/server/helpers_test.go

@@ -19,6 +19,7 @@ package server
 import (
 	"context"
 	"os"
+	"strings"
 	"testing"
 	"time"
 
@@ -119,8 +120,9 @@ func TestGetRepoDigestAndTag(t *testing.T) {
 
 func TestBuildLabels(t *testing.T) {
 	imageConfigLabels := map[string]string{
-		"a": "z",
-		"d": "y",
+		"a":          "z",
+		"d":          "y",
+		"long-label": strings.Repeat("example", 10000),
 	}
 	configLabels := map[string]string{
 		"a": "b",
@@ -132,6 +134,7 @@ func TestBuildLabels(t *testing.T) {
 	assert.Equal(t, "d", newLabels["c"])
 	assert.Equal(t, "y", newLabels["d"])
 	assert.Equal(t, containerKindSandbox, newLabels[containerKindLabel])
+	assert.NotContains(t, newLabels, "long-label")
 
 	newLabels["a"] = "e"
 	assert.Empty(t, configLabels[containerKindLabel], "should not add new labels into original label")