Updated openstack/openstack
Project: openstack/heat  d2fab290b6bfc385dc41bb71d6ecb069f2118d2a

Sync oslo-incubator.middleware module

This syncing has contained oslo-incubator.middleware module
to get capability of x-openstack-request-id.

Change-Id: I8e3b7d23bc1def705a0399bbd5015241a0fba8b1
Partial-Bug: #1324065