[6.14.z] Add end-to-end test for facts

[Satellite-QE]

Cherrypick of PR: #15818

Problem Statement

Missing end-to-end scenario for facts
Existing implementation of get_facts() method splits the string on colon. With RHEL9, we have fact values which contains colon like 'lscpu.vulnerability_spec_rstack_overflow: Vulnerable: Safe RET, no microcode'. This raises Value error ``ValueError: too many values to unpack (expected 2)`.

Solution

Added e2e for facts
Updated the code to split the string on the first colon and treat the first half as key and rest of it as value.

Related Issues

[Satellite-QE]

trigger: test-robottelo
pytest: tests/foreman/cli/test_fact.py -k test_positive_facts_end_to_end
ROBOTTELO_server__deploy_arguments__deploy_rhel_version: '9'

[Satellite-QE]

PRT Result

Build Number: 8027
Build Status: SUCCESS
PRT Comment: pytest tests/foreman/cli/test_fact.py -k test_positive_facts_end_to_end --external-logging
Test Result : =========== 1 passed, 8 deselected, 21 warnings in 916.65s (0:15:16) ===========