Description of problem:

Installing package does not satisfy program dependencies


Version-Release number of selected component (if applicable): 1.1


How reproducible: 100%

Steps to Reproduce:
1. Install keycloak-httpd-client-install on a system without python3-lxml previously installed.
2. Try to run 'keycloak-httpd-client-install --version' and watch it throw an error about missing dependency

Actual results:

```
Traceback (most recent call last):
  File "/usr/bin/keycloak-httpd-client-install", line 19, in <module>
    from keycloak_httpd_client import keycloak_rest
  File "/usr/lib/python3.9/site-packages/keycloak_httpd_client/keycloak_rest.py", line 9, in <module>
    from keycloak_httpd_client import utils
  File "/usr/lib/python3.9/site-packages/keycloak_httpd_client/utils.py", line 21, in <module>
    from lxml import etree
ModuleNotFoundError: No module named 'lxml'
```


Expected results:
```
version 1.1
```

Additional info: