renew-certs: Update container names.

Docker Compose changed the names of the containers a while back, update
the names in the playbook as well.

Ansible/renew-certs.yaml

@@ -6,23 +6,23 @@
   handlers:
     - name: Restart Nginx on host01
       delegate_to: host01
-      command: docker restart web-proxy_proxy_1
+      command: docker restart web-proxy-proxy-1
 
     - name: Restart Nginx on ns4
       delegate_to: ns4
-      command: docker restart web-proxy_proxy_1
+      command: docker restart web-proxy-proxy-1
 
     - name: Restart Nginx on kodi
       delegate_to: kodi
-      command: docker restart web-proxy_proxy_1
+      command: docker restart web-proxy-proxy-1
 
     - name: Reload Exim
       delegate_to: host01
-      command: docker kill --signal SIGHUP mail_smtp_1
+      command: docker kill --signal SIGHUP mail-smtp-1
 
     - name: Reload Dovecot
       delegate_to: host01
-      command: docker kill --signal SIGHUP mail_imap_1
+      command: docker kill --signal SIGHUP mail-imap-1
 
   tasks:
     - name: Issue certificate for ns4