ipaserver_setup_custodia: options.promote needs to be set

The use of custodiainstance.get_custodia_instance requires that
options.promote exists. As this is a server installation, promote
is set to False.

roles/ipaserver/library/ipaserver_setup_custodia.py

@@ -70,6 +70,7 @@ def main():
     options.realm_name = ansible_module.params.get('realm')
     options.host_name = ansible_module.params.get('hostname')
     options.setup_ca = ansible_module.params.get('setup_ca')
+    options.promote = False
 
     # init ##################################################################