Feature/filestorage securityservices create (#132)

* sfs: Add support for security services Create

* sfs: Add acceptance tests for security service Create

* sfs: Fix comments
diff --git a/openstack/sharedfilesystems/v2/securityservices/testing/fixtures.go b/openstack/sharedfilesystems/v2/securityservices/testing/fixtures.go
new file mode 100644
index 0000000..78adc48
--- /dev/null
+++ b/openstack/sharedfilesystems/v2/securityservices/testing/fixtures.go
@@ -0,0 +1,52 @@
+package testing
+
+import (
+	"fmt"
+	"net/http"
+	"testing"
+
+	th "github.com/gophercloud/gophercloud/testhelper"
+	fake "github.com/gophercloud/gophercloud/testhelper/client"
+)
+
+func MockCreateResponse(t *testing.T) {
+	th.Mux.HandleFunc("/security-services", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "POST")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+		th.TestHeader(t, r, "Content-Type", "application/json")
+		th.TestHeader(t, r, "Accept", "application/json")
+		th.TestJSONRequest(t, r, `
+        {
+            "security_service": {
+                "description": "Creating my first Security Service",
+                "dns_ip": "10.0.0.0/24",
+                "user": "demo",
+                "password": "***",
+                "type": "kerberos",
+                "name": "SecServ1"
+            }
+        }`)
+
+		w.Header().Add("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+
+		fmt.Fprintf(w, `
+        {
+            "security_service": {
+                "status": "new",
+                "domain": null,
+                "project_id": "16e1ab15c35a457e9c2b2aa189f544e1",
+                "name": "SecServ1",
+                "created_at": "2015-09-07T12:19:10.695211",
+                "updated_at": null,
+                "server": null,
+                "dns_ip": "10.0.0.0/24",
+                "user": "demo",
+                "password": "supersecret",
+                "type": "kerberos",
+                "id": "3c829734-0679-4c17-9637-801da48c0d5f",
+                "description": "Creating my first Security Service"
+            }
+        }`)
+	})
+}