Move test scripts to script/test.

Signed-off-by: Daniel Nephin <dnephin@docker.com>

script/test/default

@@ -0,0 +1,15 @@
+#!/bin/bash
+# See CONTRIBUTING.md for usage.
+
+set -ex
+
+TAG="docker-compose:$(git rev-parse --short HEAD)"
+
+rm -rf coverage-html
+# Create the host directory so it's owned by $USER
+mkdir -p coverage-html
+
+docker build -t "$TAG" .
+
+GIT_VOLUME="--volume=$(pwd)/.git:/code/.git"
+. script/test/all