Sync baremetal openstack with upstream

Change-Id: I125fc08e2cc4433aeaa470de48823dd4434c2030
Related-PROD: PROD-33018
diff --git a/openstack/baremetal/v1/nodes/testing/doc.go b/openstack/baremetal/v1/nodes/testing/doc.go
new file mode 100644
index 0000000..df83778
--- /dev/null
+++ b/openstack/baremetal/v1/nodes/testing/doc.go
@@ -0,0 +1,2 @@
+// nodes unit tests
+package testing