FAM: set a password for LDAP Auth sources at creation

This was originally removed in c390a27
as always setting the password broke idempotency.
But with theforeman/foreman-ansible-modules#1806
we can now set the password for creation, but avoid trying to update it.

conf/fam.yaml.template

@@ -36,6 +36,7 @@ FAM:
     auth_source_ldap_attr_login: uid
     auth_source_ldap_groups_base: cn=groups,cn=accounts,dc=example,dc=com
     external_usergroup_name: "admins"
+    default_auth_source_ldap_account_password: password
 
   COMPUTE_PROFILE:
     libvirt: