Merge pull request #43259 from thaJeztah/20.10_backport_fix_lock

[20.10 backport] vendor: bump etcd v3.3.27

vendor.conf

@@ -67,13 +67,15 @@ github.com/moby/ipvs                                4566ccea0e08d68e9614c3e7a64a
 github.com/BurntSushi/toml                          3012a1dbe2e4bd1391d42b32f0577cb7bbc7f005 # v0.3.1
 github.com/samuel/go-zookeeper                      d0e0d8e11f318e000a8cc434616d69e329edc374
 github.com/deckarep/golang-set                      ef32fa3046d9f249d399f98ebaf9be944430fd1d
-github.com/coreos/etcd                              d57e8b8d97adfc4a6c224fe116714bf1a1f3beb9 # v3.3.12
+github.com/coreos/etcd                              973882f697a8db3d59815bf132c6c506434334bd # v3.3.27
 github.com/coreos/go-semver                         8ab6407b697782a06568d4b7f1db25550ec2e4c6 # v0.2.0
-github.com/ugorji/go                                b4c50a2b199d93b13dc15e78929cfb23bfdf21ab # v1.1.1
 github.com/hashicorp/consul                         9a9cc9341bb487651a0399e3fc5e1e8a42e62dd9 # v0.5.2
 github.com/miekg/dns                                6c0c4e6581f8e173cc562c8b3363ab984e4ae071 # v1.1.27
 github.com/ishidawataru/sctp                        f2269e66cdee387bd321445d5d300893449805be
 go.etcd.io/bbolt                                    232d8fc87f50244f9c808f4745759e08a304c029 # v1.3.5
+github.com/json-iterator/go                         a1ca0830781e007c66b225121d2cdb3a649421f6 # v1.1.10
+github.com/modern-go/concurrent                     bacd9c7ef1dd9b15be4a9909b8ac7a4e313eec94 # 1.0.3
+github.com/modern-go/reflect2                       94122c33edd36123c84d5368cfb2b69df93a0ec8 # v1.0.1
 
 # get graph and distribution packages
 github.com/docker/distribution                      dcf66392d606f50bf3a9286dcb4bdcdfb7c0e83a # v2.8.0