Comment 3 for bug 1971465

Attempting to add swap to overcloud nodes per comments:

<cloudnull> undercloud is showing a pretty heavily used swap
<cloudnull> overcloud controller is showing no swap
<rlandy> empty there
<cloudnull> yeah
<cloudnull> I suspect because none exists
<cloudnull> maybe we can include the swap template on the deployment

https://review.opendev.org/c/openstack/tripleo-quickstart/+/840283