Adding ability to configure cinder_internal_tenant_project_id and cinder_internal_tenant_user_id options

Change-Id: I5ddc8fc9a56e6be5c72403265610810ae5e66d5f
diff --git a/README.rst b/README.rst
index 72f353d..899d5c1 100644
--- a/README.rst
+++ b/README.rst
@@ -22,6 +22,8 @@
         cinder_gid: 304
         nas_secure_file_permissions: false
         nas_secure_file_operations: false
+        cinder_internal_tenant_user_id: f46924c112a14c80ab0a24a613d95eef
+        cinder_internal_tenant_project_id: b7455b8974bb4064ad247c8f375eae6c
         default_volume_type: 7k2SaS
         availability_zone_fallback: True
         database:
@@ -69,6 +71,8 @@
         cinder_gid: 304
         nas_secure_file_permissions: false
         nas_secure_file_operations: false
+        cinder_internal_tenant_user_id: f46924c112a14c80ab0a24a613d95eef
+        cinder_internal_tenant_project_id: b7455b8974bb4064ad247c8f375eae6c
         default_volume_type: 7k2SaS
         database:
           engine: mysql