Description of problem:
keycloak-httpd-client-install doesn't work without python3-lxml rpm installed, the error message is:
```
from lxml import etree
ModuleNotFoundError: No module named 'lxml'
```

keycloak-httpd-client-install doesn't have python3-lxml as a requirement.

Our documentation doesn't mention python3-lxml needs to be installed manually:
https://access.redhat.com/documentation/en-us/red_hat_satellite/6.14/html/installing_satellite_server_in_a_connected_network_environment/configuring_external_authentication_satellite#Configuring_Project_with_Keycloak_Authentication_keycloak-general

This KB article shows the solution:
https://access.redhat.com/solutions/7048727

I think this BZ should be flipped either into an RHSSO bug because the package should have a dependency specified, or a Satellite docs bug because we should document the package needs to be installed manually. I will leave it up to triage.

Version-Release number of selected component (if applicable):
All

How reproducible:
Deterministic

Steps to Reproduce:
1. Follow the linked docs

Actual results:
Error, docs can't be followed and the KB article needs to be followed to continue

Expected results:
python3-lxml is either installed automatically as a dependency or the docs mentions its installation