feat: cleanup old repo management

- change profiles::puppet::agent to require Yumrepo['puppet']
- remove managed repos hieradata
- remove profiles::yum::* classes that are not required
- remove missed rebase comment

hieradata/roles/infra/ovirt/engine.yaml

@@ -1,14 +1,4 @@
 ---
-profiles::yum::global::managed_repos:
-  - 'virt-advanced-virtualization'
-  - 'storage-ceph-pacific'
-  - 'cloud-openstack-xena'
-  - 'messaging-rabbitmq-38'
-  - 'nfv-openvswitch-2'
-  - 'opstools-collectd-5'
-  - 'storage-gluster-10'
-  - 'virt-ovirt-45'
-
 profiles::yum::global::repos:
   centos_8_advanced_virtualization:
     name: 'virt-advanced-virtualization'