Updated openstack/openstack
Project: openstack/nova  9fe8bee9b7c24a114ca7eaf6e3340b29c0dcd295

Diagnostics: add validation for types

When creating diagnostics the calling application is able to pass
cpu, nic and disk diagnostics. This patch validates that those are of
the correct type.

TrivialFix

Change-Id: Id76c37e2f3ff50b0029bb1fa26348e43aee432f1