feat: add ovirt roles

- add repositories for ovirt
- add role/profile for ovirt/engine and ovirt/node
- add deep-merge for managed_repos
- change repos to allow filesource (URL or file://)
- change reposync to use curl instead of wget

hieradata/roles/infra/ovirt/engine.yaml

@@ -0,0 +1,10 @@
+---
+profiles::yum::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'