Update all existing Web UI test cases to include descriptive docstrings following a consistent pattern.

Make sure to agree this or alternative pattern with jstodola@redhat.com and rhn-support-jikortus 

Suggestion: (Goal is to stay as close to mapping to Fedora test plans: ex: https://fedoraproject.org/wiki/QA:Testcase_partitioning_webui_custom_btrfs )

"""
Description:
    [One-line summary of what the test verifies]

Setup:
    [Initial state, configuration, resources, or inputs]

Test Steps:
    [Sequence of actions taken in the test]

Expected Results:
    [Outcomes or conditions that should be true if the test passes]
"""

Example:

"""
Description:
    Test system installation with three disks and RAID 0 for the root filesystem.

Setup:
    - Disk 'vda' contains 'biosboot' and '/boot'
    - Disks 'vdb' and 'vdc' are available for RAID configuration

Test Steps:
    - Create a RAID 0 array using 'vdb' and 'vdc'
    - Assign the root filesystem ('/') to the RAID array

Expected Results:
    - System installs successfully
    - RAID 0 array is correctly configured
    - '/' is mounted on the RAID array
"""