Gyu-Ho Lee a8c84ffc93 clientv3: fix client balancer with gRPC v1.7 7 lat temu
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config.go a8c84ffc93 clientv3: fix client balancer with gRPC v1.7 7 lat temu
config_test.go a8c84ffc93 clientv3: fix client balancer with gRPC v1.7 7 lat temu