Xrootd allows for multiple settings for the same option - xrdconfig hides that

[kreczko]

Example config:

sec.protocol /usr/lib64 gsi
sec.protocol ztn

is a valid config, but xrdconfig will only show the last entry.

To fix this, xrdconfig should collect all settings in a dict of lists:

from collections import defaultdict
result = defaultdict(list)

result[var].append(value)

in the code block starting https://github.com/uobdic/xrdconfig/blob/main/src/xrdconfig/cli.py#L54

The output and diff will need to be modified accordingly