For ytt playground

config-ytt-ansible-inventory.yml

#@ load("@ytt:data", "data")
#@ load("@ytt:template", "template")

#@ def parse(deployment):
#@ key = "{}".format(deployment.ip)
#@ return {key: {"idrac_ip": "{{ inventory_hostname }}","catalog_xml": deployment.catalogXml}}
#@ end

all:
  hosts:
#@ for deployment in data.values.deployments:
    _: #@ template.replace(parse(deployment))
#@ end

values.yml

#@data/values
---
deployments:
- ip: 10.0.0.1
  catalogXml: "Catalog1.xml"
- ip: 10.0.0.2
  catalogXml: "Catalog2.xml"