CentOS: Do not set manage_virt
CentOS: Do not set manage_virt

... because now the parameter is set according to the OS version.

Depends-on: https://review.opendev.org/838522
Change-Id: Id58379a7414ac9f9e75c7e20d4bc28d71af74cbd

openstack/puppet-openstack-integration,openstack/puppet-openstack-integration,openstack/puppet-openstack-integration