Added acceptance test for list policy

acceptance/openstack/networking/v2/extensions/vpnaas/ipsecpolicy_test.go

@@ -7,8 +7,30 @@ import (
 
 	"github.com/gophercloud/gophercloud/acceptance/clients"
 	"github.com/gophercloud/gophercloud/acceptance/tools"
+	"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/vpnaas/ipsecpolicies"
 )
 
+func TestPolicyList(t *testing.T) {
+	client, err := clients.NewNetworkV2Client()
+	if err != nil {
+		t.Fatalf("Unable to create a network client: %v", err)
+	}
+
+	allPages, err := ipsecpolicies.List(client, nil).AllPages()
+	if err != nil {
+		t.Fatalf("Unable to list IPSec policies: %v", err)
+	}
+
+	allPolicies, err := ipsecpolicies.ExtractPolicies(allPages)
+	if err != nil {
+		t.Fatalf("Unable to extract policies: %v", err)
+	}
+
+	for _, policy := range allPolicies {
+		tools.PrintResource(t, policy)
+	}
+}
+
 func TestPolicyCRUD(t *testing.T) {
 	client, err := clients.NewNetworkV2Client()
 	if err != nil {