Issue with creating ConfigMap using the GAC intents

When creating the ConfigMap using the GAC customization intents, the file name is always added as a key as below,

data:
  filename.json: |+
    address-pools:
    - addresses:
      - 192.168.20.220-192.168.20.250
      name: default
      protocol: layer2

But there are cases, where we need a configmap with a custom key values instead of the filename. The config map creation in the GAC need to be enhanced to enable the creation of such ConfigMaps.