Add ability to reference variables defined in attached credentials

[dancorrigan1]

SUMMARY

When using AWX/AAP and a custom credential type, It would be great to be able to reference defined variables, specifically vcenter_hostname so I can compose vcenter_hostname dynamically based upon attached credential rather than hardcoding this variable and value into the vmware.yml

ISSUE TYPE

• Feature Idea

COMPONENT NAME

community.vmware.vmware_vm_inventory

ADDITIONAL INFORMATION

Credential Input configuration

fields:
  - id: username
    type: string
    label: vCenter username
  - id: password
    type: string
    label: vCenter password
    secret: true
  - id: hostname
    type: string
    label: vCenter hostname
  - id: verify_ssl
    type: boolean
    label: Verify SSL

Credential Injector configuration

env:
  VMWARE_HOST: '{{ hostname }}'
  VMWARE_PASSWORD: '{{ password }}'
  VMWARE_USERNAME: '{{ username }}'
  VMWARE_VALIDATE_CERTS: '{{ verify_ssl }}'
extra_vars:
  vcenter_hostname: '{{ hostname }}'

I want to be able to:

plugin: community.vmware.vmware_vm_inventory
strict: false
with_extra_vars: true
...
compose:
  vcenter_hostname: vcenter_hostname