How to configure maven wagon plugin to allow insecure ssl?

Question

At our company we have artifactory running on an https server.

I could access the artifacts by adding the cert of the server to the java keystore.

But i would rather set the properties:

maven.wagon.http.ssl.insecure = true  
maven.wagon.http.ssl.allowall = true

My question is: where can is set these? Ideally it would be in the pom