chore: centralise all yum repo configuration (#436)

- add 30+ repository definitions to AlmaLinux/all_releases.yaml with `ensure: absent` defaults
- update all role-specific hieradata files to use `ensure: present` pattern
- remove duplicated repository URL/GPG key configurations from individual roles
- maintains existing functionality while improving maintainability"

Reviewed-on: #436

hieradata/roles/infra/nomad/agent.yaml

@@ -24,13 +24,8 @@ frrouting::ospfd_interfaces:
     area: 0.0.0.1
 
 profiles::yum::global::repos:
-  ceph-reef:
-    name: ceph-reef
-    descr: ceph reef repository
-    target: /etc/yum.repos.d/ceph-reef.repo
-    baseurl: https://edgecache.query.consul/ceph/yum/el%{facts.os.release.major}/%{facts.os.architecture}
-    gpgcheck: 0,
-    mirrorlist: absent
+  ceph:
+    ensure: present
 
 profiles::ceph::client::keyrings:
   nomad: