Pulp

This actually needs to be 2 boxes. Pulp2 can only be installed on Centos7. However, CentOS7 isn't patched in a way that supports what we need in a FIPS context, so we need CentOS8 for pulp3. Therefore, this task is really "we need a 2-box setup for testing 2to3 minration in a FIPS context".

Here was the issue with testing Pulp 3 against python 3.6 on CentOS 7: https://bugzilla.redhat.com/show_bug.cgi?id=1811170

As mentioned at the FIPS check-in meeting:

1. I decided not to go with the 2 VMs with NFS approach.
2. Instead, I am going with a CentOS 8 VM (Pulp 3) + a CentOS 7 container (Pulp 2) on top of it.
3. I am trying to get the Vagrant docker provider (plugin) to run the container on top of the VM. So that the container is provisioned via Ansible. This is a stated feature of it. If not, I could work around it probably, but still.
4. This approach does not support SELinux in the Centos 7 Pulp 2 container. I need to verify with Brian or Tanya that this is OK.