add OAuth2 config dump

[jessicamack]

SUMMARY

dump_auth_config will now also dump OAuth2 config data.

ISSUE TYPE

• New or Enhanced Feature

COMPONENT NAME

• Other

AWX VERSION

awx: 24.2.1.

ADDITIONAL INFORMATION

if OAuth2 is not configured

    {
        "OAUTH2_missing_fields": [
            "KEY"
        ]
    }

if OAuth2 is configured

    {
        "type": "ansible_base.authentication.authenticator_plugins.google_oauth2",
        "name": "GOOGLE_OAUTH2",
        "enabled": true,
        "create_objects": true,
        "users_unique": false,
        "remove_users": true,
        "configuration": {
            "CALLBACK_URL": "https://towerhost/sso/complete/google-oauth2/",
            "KEY": "123456-gmabcdef.apps.googleusercontent.com",
            "SECRET": "test",
            "AUTH_EXTRA_ARGUMENTS": {
                "CUSTOM_PARAM": "custom field"
            }
        }
    }