The domains method was not defined, and therefore when specifying a parent domain during route domain creation, the process would fail. Tests have been added to detect this going forward
route domains on a BIG-IP. Tests for this module can be found here https://github.com/F5Networks/f5-ansible/blob/master/roles/__bigip_routedomain/tasks/main.yaml Platforms this was tested on are 11.6.0 12.0.0 12.1.0 12.1.0 HF1