Make it possible to disable access_ip (openstack provider) (#5239)

* Add a variable do disable access_ip

* Document the use of use_access_ip

contrib/terraform/terraform.py

@@ -339,14 +339,19 @@ def iter_host_ips(hosts, ips):
     '''Update hosts that have an entry in the floating IP list'''
     for host in hosts:
         host_id = host[1]['id']
+        use_access_ip = host[1]['metadata']['use_access_ip']
         if host_id in ips:
             ip = ips[host_id]
+            
             host[1].update({
                 'access_ip_v4': ip,
                 'access_ip': ip,
                 'public_ipv4': ip,
                 'ansible_ssh_host': ip,
             })
+
+            if use_access_ip == "0":
+                host[1].pop('access_ip')
         yield host