Hack to disable network tab in host configuration

Hello,

planing to use forman an ENC for puppet and as config store when
provisioning hosts.
Wen we need a new host we clone an existing first.
After that we use an external script that queries the ENC for the new node
to get all parameters needed for provisioning.
This script mainly clones vmware templates.

This works well for us

But there is on showstopper:
when we clone a hsot in foreman we need to provide a uniqe mac adress we
never need.
I understand that this is not the case for an unmanaged host but we need to
manage hosts as we are using parameters attached to the OS which are also
gone by un unmanaged system.

so is there a dirty hack that simply disables validation of the mac address
filed ?

thanks