Add acceptance tests for orchestration changes

Acceptance tests for added interfaces. Note that the input of the
validation has changed form map to string.
diff --git a/acceptance/rackspace/orchestration/v1/stacks_test.go b/acceptance/rackspace/orchestration/v1/stacks_test.go
index cfec4e9..61969b5 100644
--- a/acceptance/rackspace/orchestration/v1/stacks_test.go
+++ b/acceptance/rackspace/orchestration/v1/stacks_test.go
@@ -80,3 +80,75 @@
 	t.Logf("Abandonded stack %+v\n", abandonedStack)
 	th.AssertNoErr(t, err)
 }
+
+// Test using the updated interface
+func TestStacksNewTemplateFormat(t *testing.T) {
+	// Create a provider client for making the HTTP requests.
+	// See common.go in this directory for more information.
+	client := newClient(t)
+
+	stackName1 := "gophercloud-test-stack-2"
+	templateOpts := new(osStacks.Template)
+	templateOpts.Bin = []byte(template)
+	createOpts := osStacks.CreateOpts{
+		Name:         stackName1,
+		TemplateOpts: templateOpts,
+		Timeout:      5,
+	}
+	stack, err := stacks.Create(client, createOpts).Extract()
+	th.AssertNoErr(t, err)
+	t.Logf("Created stack: %+v\n", stack)
+	defer func() {
+		err := stacks.Delete(client, stackName1, stack.ID).ExtractErr()
+		th.AssertNoErr(t, err)
+		t.Logf("Deleted stack (%s)", stackName1)
+	}()
+	err = gophercloud.WaitFor(60, func() (bool, error) {
+		getStack, err := stacks.Get(client, stackName1, stack.ID).Extract()
+		if err != nil {
+			return false, err
+		}
+		if getStack.Status == "CREATE_COMPLETE" {
+			return true, nil
+		}
+		return false, nil
+	})
+
+	updateOpts := osStacks.UpdateOpts{
+		TemplateOpts: templateOpts,
+		Timeout:      20,
+	}
+	err = stacks.Update(client, stackName1, stack.ID, updateOpts).ExtractErr()
+	th.AssertNoErr(t, err)
+	err = gophercloud.WaitFor(60, func() (bool, error) {
+		getStack, err := stacks.Get(client, stackName1, stack.ID).Extract()
+		if err != nil {
+			return false, err
+		}
+		if getStack.Status == "UPDATE_COMPLETE" {
+			return true, nil
+		}
+		return false, nil
+	})
+
+	t.Logf("Updated stack")
+
+	err = stacks.List(client, nil).EachPage(func(page pagination.Page) (bool, error) {
+		stackList, err := osStacks.ExtractStacks(page)
+		th.AssertNoErr(t, err)
+
+		t.Logf("Got stack list: %+v\n", stackList)
+
+		return true, nil
+	})
+	th.AssertNoErr(t, err)
+
+	getStack, err := stacks.Get(client, stackName1, stack.ID).Extract()
+	th.AssertNoErr(t, err)
+	t.Logf("Got stack: %+v\n", getStack)
+
+	abandonedStack, err := stacks.Abandon(client, stackName1, stack.ID).Extract()
+	th.AssertNoErr(t, err)
+	t.Logf("Abandonded stack %+v\n", abandonedStack)
+	th.AssertNoErr(t, err)
+}