Add IPAM step to IPtrunk creation

At the end of the workflow, create two DNS records for both sides of the trunk.

Naming is done as <ae-interface>-0.<router-fqdn>. @simone.spinelli please verify this is correct

requested review from @Aleksandr.Kurbatov

assigned to @karel.vanklink

approved this merge request

@karel.vanklink naming for the interface is correct.

merged