Factor frr role from debian, ceph and proxmox

Consolidate base system and networking setup into debian role and BGP
configuration into frr role. Add facts role to collect data from NetBox
once to avoid many slow lookups. Also many other tweaks and cleanups.

roles/ceph/tasks/firewall.yml

@@ -1,7 +1,3 @@
-- name: Retrieve service list
-  set_fact:
-    services: '{{ query("netbox.netbox.nb_lookup", "clusters", raw_data=true, api_filter="name="+cluster) | map(attribute="custom_fields.services") | flatten }}'
-
 - name: Install nftables
   package:
     name: nftables

roles/ceph/tasks/main.yml

@@ -1,7 +1,3 @@
-- name: Get all nodes in my cluster
-  set_fact:
-    nodes: "{{ groups['cluster_'+cluster] | map('extract', hostvars) }}"
-
 - name: Configure /etc/hosts
   template:
     dest: /etc/hosts