feat: uniform system.content source schema across installers and repositories

roles/cleanup/tasks/proxmox.yml

@@ -16,7 +16,7 @@
       loop: >-
         {{
           ['ide0', 'ide2']
-          + (['ide1'] if not (os == 'rhel' and system_cfg.features.rhel_repo.source == 'iso') else [])
+          + (['ide1'] if not (os == 'rhel' and system_cfg.content.source == 'dvd') else [])
         }}
       failed_when: false
       no_log: true

roles/cleanup/tasks/vmware.yml

@@ -35,7 +35,7 @@
                 }
               ]
               if (rhel_iso is defined and rhel_iso | length > 0
-                  and not (os == 'rhel' and system_cfg.features.rhel_repo.source == 'iso'))
+                  and not (os == 'rhel' and system_cfg.content.source == 'dvd'))
               else []
             )
           }}