[PR #6772/93f5a48b backport][stable-7] Redfish: Filter empty account slots from ListUsers

[patchback]

This is a backport of PR #6772 as merged into main (93f5a48).

SUMMARY

Fixes the output for the ListUsers command in redfish.info to suppress empty account slots for services that do not support POST/DELETE to add/remove users.

Fixex #6771

ISSUE TYPE

• Bugfix Pull Request

COMPONENT NAME

redfish_info.py, redfish_utils.py

ADDITIONAL INFORMATION

Sample playbook; requires a Redfish service that shows empty account slots (like an iDRAC on a Dell PowerEdge server)

---
- hosts: all
  gather_facts: false
  vars:
    username: <REDACTED>
    password: <REDACTED>
    baseuri: <REDACTED>
    default_uri_timeout: 5
    default_uri_retries: 5
  tasks:
  - name: Get users
    community.general.redfish_info:
      category: Accounts
      command: ListUsers
      baseuri: "{{ baseuri }}"
      username: "{{ username }}"
      password: "{{ password }}"
    retries: "{{ default_uri_retries }}"
    register: redfish_results
  - debug:
      var: redfish_results

Before:

ok: [localhost] => {
    "redfish_results": {
        "ansible_facts": {
            "discovered_interpreter_python": "/usr/bin/python3"
        },
        "changed": false,
        "failed": false,
        "redfish_facts": {
            "user": {
                "entries": [
                    {
                        "Enabled": false,
                        "Id": "1",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "None",
                        "UserName": ""
                    },
                    {
                        "Enabled": true,
                        "Id": "2",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "Administrator",
                        "UserName": "root"
                    },
                    {
                        "Enabled": false,
                        "Id": "3",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    },
                    {
                        "Enabled": false,
                        "Id": "4",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    },
                    {
                        "Enabled": false,
                        "Id": "5",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    },
                    {
                        "Enabled": false,
                        "Id": "6",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    },
                    {
                        "Enabled": false,
                        "Id": "7",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    },
                    {
                        "Enabled": false,
                        "Id": "8",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    },
                    {
                        "Enabled": false,
                        "Id": "9",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    },
                    {
                        "Enabled": false,
                        "Id": "10",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    },
                    {
                        "Enabled": false,
                        "Id": "11",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    },
                    {
                        "Enabled": false,
                        "Id": "12",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    },
                    {
                        "Enabled": true,
                        "Id": "13",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    },
                    {
                        "Enabled": false,
                        "Id": "14",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    },
                    {
                        "Enabled": false,
                        "Id": "15",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    },
                    {
                        "Enabled": false,
                        "Id": "16",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "ReadOnly",
                        "UserName": ""
                    }
                ],
                "ret": true
            }
        }
    }
}

After:

ok: [localhost] => {
    "redfish_results": {
        "ansible_facts": {
            "discovered_interpreter_python": "/usr/bin/python3"
        },
        "changed": false,
        "failed": false,
        "redfish_facts": {
            "user": {
                "entries": [
                    {
                        "Enabled": true,
                        "Id": "2",
                        "Locked": false,
                        "Name": "User Account",
                        "RoleId": "Administrator",
                        "UserName": "root"
                    }
                ],
                "ret": true
            }
        }
    }
}

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