Use unmodifiableMap for shardSizes in ClusterInfo#135750

ywangd wants to merge 1 commit intoelastic:mainelastic/elasticsearch:mainfrom

ywangd:cluster-info-use-unmodifiableMap-for-shard-sizesywangd/elasticsearch:cluster-info-use-unmodifiableMap-for-shard-sizesCopy head branch name to clipboard