Dockerfile-test: make Go version flexible, move other test Dockerfiles

Signed-off-by: Gyu-Ho Lee <gyuhox@gmail.com>

hack/scripts-dev/docker-dns/run.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+/etc/init.d/bind9 start
+
+# get rid of hosts so go lookup won't resolve 127.0.0.1 to localhost
+cat /dev/null >/etc/hosts
+
+goreman -f /Procfile.tls start &
+sleep 7s
+
+ETCDCTL_API=3 ./etcdctl \
+  --cacert=/certs/ca.crt \
+  --cert=/certs/server-wildcard.crt \
+  --key=/certs//server-wildcard.key.insecure \
+  --endpoints=https://m1.etcd.local:2379,https://m2.etcd.local:22379,https://m3.etcd.local:32379 \
+  put abc def