Update oslotest to 2.16.1
Update oslotest to 2.16.1

Change-Id: I97a67d0473389ee07e0c193af69db6c75e1b72e5
Depends-on: If4b78cb92b8547a24d9e43363f155d4df7fa8bc3

openstack/rpm-packaging,openstack/rpm-packaging