Add initial test-integration suites

Uses go-check in order to separate integration tests into suites, and
have Setup and TearDown operations (on Suites and Tests) ; and use
libcompose to start the external dependencies to test on (like consul,
marathon, etcd, some http images, etc..).

- Update Godeps to get dependencies needed for the use of libcompose
- Setup initial suites and go-check + libcompose mini-framework
- Add some hacks related to libcompose, will be fixed later (when fixed
  upstream)

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

integration/consul_test.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"net/http"
+	"os/exec"
+	"time"
+
+	checker "github.com/vdemeester/shakers"
+	check "gopkg.in/check.v1"
+)
+
+func (s *ConsulSuite) TestSimpleConfiguration(c *check.C) {
+	cmd := exec.Command(traefikBinary, "fixtures/consul/simple.toml")
+	err := cmd.Start()
+	c.Assert(err, checker.IsNil)
+
+	time.Sleep(100 * time.Millisecond)
+	// TODO validate : run on 80
+	resp, err := http.Get("http://127.0.0.1/")
+
+	// Expected a 404 as we did not comfigure anything
+	c.Assert(err, checker.IsNil)
+	c.Assert(resp.StatusCode, checker.Equals, 404)
+
+	killErr := cmd.Process.Kill()
+	c.Assert(killErr, checker.IsNil)
+}