New Provider: GANDI-LIVEDNS (API v5) (#320)

* Add gandi LiveDNS api provider
* vendor testify and gandi live DNS
* govendor update github.com/prasmussen/gandi-api/{client,live_dns}
* Fix Gandi-livedns TXT unit test
* TravisCI should use go 1.10

vendor/github.com/stretchr/testify/package_test.go

@@ -0,0 +1,12 @@
+package testify
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestImports(t *testing.T) {
+	if assert.Equal(t, 1, 1) != true {
+		t.Error("Something is wrong.")
+	}
+}