Add slowest test output to end of test run
Add slowest test output to end of test run

Change-Id: Ie74a663b147bde12456d9f64edca05cfb4a29136
Signed-off-by: Sean McGinnis <961eeb09b6d45516665e15b82e013282c4faf575@gmail.com>

openstack/os-brick,openstack/os-brick