?
Blindly ignoring certificate validation in an orchestration tool such as BuildMaster is not recommended; basically it allows you to transfer secrets and other sensitive information to a machine that isn't what you think it is. as such, we don't have it as a checkbox or option.
Instead, your better off resolving the certificate validation errors. Typically, you just need to make sure you have a self-signed certificate installed on the BuildMaster machine.
If you can share more details about the configuration, we might be able to provide some more guidance on configuring certificates --- but I'm not sure how things are configured now, so it's hard to be more specific! Hope this at least helps a litte..