Updated openstack/openstack
Project: openstack/tempest  240f8af35c37af265ca50ed766629393e4b60b3b

log request start when tracing classes

When tracing rest calls for debugging purposes, logging the start
of the request is also extremely helpful, as it makes it possible
to discover that the key issue is glance is in a hung state and
not responding to any requests.

Prereq for blueprint:javelin2

Change-Id: I9aca99119fc1569c78788b11a8a32d72eaecd0a1