Merge pull request #65157 from caesarxuchao/cherrypick-65034-1.10

Automatic merge from submit-queue.

Manually cherrypick #65034 to 1.10

Manually cherrypicking #65034. Using hack/cherry_pick_pull.sh to cherrypick is difficult because that requires cherrypicking #63059 first.

This PR imported the latest jsoniterator library so that case sensitivity during unmarhsaling is optional. The PR also set Kubernetes json serializer to be case sensitive.

Fix #64612.

```release-notes
Kubernetes json deserializer is now case-sensitive to restore compatibility with pre-1.8 servers.
If your config files contains fields with wrong case, the config files will be now invalid.
```

Kubernetes-commit: 32ac1c9073b132b8ba18aa830f46b77dcceb0723

vendor/github.com/json-iterator/go/test.sh

@@ -4,7 +4,7 @@ set -e
 echo "" > coverage.txt
 
 for d in $(go list ./... | grep -v vendor); do
-    go test -coverprofile=profile.out $d
+    go test -coverprofile=profile.out -coverpkg=github.com/json-iterator/go $d
     if [ -f profile.out ]; then
         cat profile.out >> coverage.txt
         rm profile.out