Update module go.etcd.io/etcd/server/v3 to v3.5.1

vendor/go.etcd.io/etcd/server/v3/etcdserver/apply.go

vendor/go.etcd.io/etcd/server/v3/etcdserver/util.go

vendor/go.etcd.io/etcd/server/v3/mvcc/index.go

vendor/go.etcd.io/etcd/server/v3/mvcc/kvstore_txn.go

vendor/go.uber.org/zap/.travis.yml

vendor/go.uber.org/zap/CHANGELOG.md

vendor/go.uber.org/zap/FAQ.md

vendor/go.uber.org/zap/Makefile

vendor/go.uber.org/zap/README.md

vendor/go.uber.org/zap/clock.go

vendor/go.uber.org/zap/go.mod

vendor/go.uber.org/zap/go.sum

vendor/go.uber.org/zap/logger.go

vendor/go.uber.org/zap/options.go

vendor/go.uber.org/zap/zapcore/entry.go

vendor/go.uber.org/zap/zapcore/field.go

vendor/go.uber.org/zap/zapcore/write_syncer.go

vendor/golang.org/x/sys/unix/README.md

vendor/golang.org/x/sys/unix/asm_bsd_386.s

vendor/golang.org/x/sys/unix/asm_bsd_arm.s