[fuzz]: fix oss fuzz 32643, Config validation of lb_subset_config for server fuzz test#16582

asraa merged 3 commits intoenvoyproxy:mainenvoyproxy/envoy:mainfrom

chaoqin-li1123:config_validation_for_server_fuzz_testchaoqin-li1123/envoy:config_validation_for_server_fuzz_testCopy head branch name to clipboard