This update provides:
1)  workaround around the build failures. In
summary, it forces the download of some packages during the build
process.
2) update the set of packages that should go inside the vendor
directory
3) Update the dockerfile to use go 1.10

Change-Id: I2bfd090ce0f25b0c10aa214755ae2da7e5384d60
diff --git a/vendor/github.com/coreos/etcd/Dockerfile-release.arm64 b/vendor/github.com/coreos/etcd/Dockerfile-release.arm64
new file mode 100644
index 0000000..d8816e5
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/Dockerfile-release.arm64
@@ -0,0 +1,11 @@
+FROM aarch64/ubuntu:16.04
+
+ADD etcd /usr/local/bin/
+ADD etcdctl /usr/local/bin/
+ADD var/etcd /var/etcd
+ADD var/lib/etcd /var/lib/etcd
+
+EXPOSE 2379 2380
+
+# Define default command.
+CMD ["/usr/local/bin/etcd"]