Adding possibility to skip tempest tests

If you pass --testr-tests=none, you can skip tempest tests.
This is good if you need to deploy the environment to make some
tests without run automatically tempest.

Change-Id: I0ac85cbdee0d42497b987ac576c189ac624212ed
Update rdopkg playbook

Change-Id: I3962f201166d59c2e9df6b14da7fb4a94a6c019f
HACK to use tags set by rdopkg

Change-Id: I9768730f0e3edc257691e6e9baaa665c20a7e124
Add pause before running tempest

Change-Id: If7e7269db94407b2e9bc46c6efe1ad73865c52ee
workaround for rdopkg

Change-Id: Ic390db9d56b4eae0744819218f62063f07a26c5e