Some jobs have been modified to run to confirm that functionality is
still working when FIPS is enabled on the nodes.
As the FIPS tests currently run on centos nodes, code is added
to the test-setup script to set up the databases correctly. Also had
to increase the swap space on the nodes; see [0] for an explanation.
The current FIPS jobs run using python 3.6 on centos-8-stream. We will
modify these to run on centos-9-stream and python 3.9 in a
subsequent patch.
[0] https://review.opendev.org/c/openstack/devstack/+/803706
Change-Id: I060d8247c7b09f63990ea411e6c6a056bb50410d