Revert "Zabbix: cloud servers need to talk to zabbix over the vpn"

This reverts commit 15ba14e0bd.

This breaks for staging/dev hosts, need to rethink

inventory/group_vars/cloud_aws

@@ -16,6 +16,3 @@ nagios_Check_Services:
   raid: false
   sshd: false
   swap: false
-zabbix_host: zabbix01.vpn.fedoraproject.org
-zabbix_server: "{{ zabbix_hostname }}"
-zabbix_auth_key: "{{ zabbix_apikey }}" # ansible-private repo