vendor update for Docker instance plugin

Author: ndegory

vendor.conf

@@ -21,16 +21,16 @@ github.com/coreos/etcd/etcdserver/etcdserverpb          v3.1.3
 github.com/coreos/etcd/mvcc/mvccpb                      v3.1.3
 github.com/coreos/etcd/pkg/tlsutil                      v3.1.3
 github.com/davecgh/go-spew                              v1.0.0-9-g346938d
-github.com/docker/distribution                          v2.6.0-rc.1-4-g7694c31
-github.com/docker/docker                                3a68292
-github.com/docker/go-connections                        v0.2.1-10-gf512407
-github.com/docker/go-units                              v0.3.1-8-g8a7beac
+github.com/docker/docker                                v17.04.0-ce
+github.com/docker/distribution				b38e5838b7b2f2ad48e06ec4b500011976080621
+github.com/docker/libtrust				9cbd2a1374f46905c68a4eb3694a130610adc62a
+github.com/docker/go-units				9e638d38cf6977a37a8ea0078f3ee75a7cdb2dd1
+github.com/docker/go-connections			d217f8e36aba4dbc397981e692a65d3f13b9a46d
 github.com/ghodss/yaml                                  73d445a93680fa1a78ae23a5839bad48f32ba1ee
 github.com/golang/glog                                  23def4e
 github.com/golang/mock                                  bd3c8e8
 github.com/golang/protobuf/jsonpb                       4bd1920723d7b7c925de087aa32e2187708897f7
 github.com/golang/protobuf/proto                        4bd1920723d7b7c925de087aa32e2187708897f7
-github.com/gorilla/handlers                             v1.1-12-ge1b2144
 github.com/gorilla/mux                                  757bef9
 github.com/gorilla/rpc                                  22c016f
 github.com/grpc-ecosystem/go-grpc-prometheus            v1.1
@@ -50,7 +50,8 @@ github.com/mattn/go-colorable                           d228849
 github.com/mattn/go-isatty                              30a891c
 github.com/matttproud/golang_protobuf_extensions        v1.0.0
 github.com/nightlyone/lockfile                          1d49c98
-github.com/opencontainers/runc                          v1.0.0-rc2-137-g43c4300
+github.com/opencontainers/runc				9c2d8d184e5da67c95d601382adf14862e4f2228	https://github.com/docker/runc.git # libcontainer
+github.com/opencontainers/go-digest			a6d0ee40d4207ea02364bd3b9e8e77b9159ba1eb
 github.com/pkg/errors                                   v0.8.0-2-g248dadf
 github.com/pmezard/go-difflib                           v1.0.0
 github.com/prometheus/client_golang/prometheus          v0.8.0