roles/common: Always restart nftables service

The "reload" capability only exists on Ubuntu, and it is exactly
the same as the "restart" functionality.

roles/common/handlers/main.yml

@@ -16,5 +16,5 @@
 - name: reload systemd
   systemd: daemon_reload=yes
 
-- name: reload nftables
-  systemd: name=nftables state=reloaded
+- name: restarted nftables
+  systemd: name=nftables state=restarted

roles/common/tasks/firewall_Ubuntu.yml

@@ -34,7 +34,7 @@
     when: ansible_distribution_version is version('20.04', '>=')
     template: src=nftables.conf.j2 dest=/etc/nftables.conf owner=root mode=0644
     notify:
-      - reload nftables
+      - restart nftables
 
   - name: Create /etc/nftables extra config directory
     when: ansible_distribution_version is version('20.04', '>=')
@@ -50,7 +50,7 @@
       - abuseipdb-ipv4.nft
       - abuseipdb-ipv6.nft
     notify:
-      - reload nftables
+      - restart nftables
 
   - name: Copy firewalld public zone file
     when: ansible_distribution_version is version('18.04', '<=')