Enable Nose HTML output on unittest jobs.
Enable Nose HTML output on unittest jobs.

Have nose output an HTML results file at the end of unittest builds.
Also copy that results file to static.openstack.org.

Change-Id: I46c487919e09d25eebf2858830bde080a4c8e4f4
Reviewed-on: https://review.openstack.org/11736
Approved: James E. Blair <e81a02a9d6405977f63a769d9f6ec8ed9d924325@inaugust.com>
Reviewed-by: James E. Blair <e81a02a9d6405977f63a769d9f6ec8ed9d924325@inaugust.com>
Tested-by: Jenkins

open-switch/infra_puppet-jenkins,open-switch/infra_puppet-jenkins